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XPS 13 9365 - Thunderbolt/Power port not working - TB16

Q: XPS 13 9365 - Thunderbolt/Power port not working - TB16

I have purchased the new XPS 13 2-in-1 laptop.
The Thunderbolt 3 port on the left side of the laptop is not working.
I have also purchased the TB16 dock and it is not recognized at all.
In the Thunderbolt software details, it shows the Controller driver as "Unknown".
I am out of ideas.
I have done the following:
1. Clean install Windows and run all updates.
2. Install all of the latest drivers and Bios updates, in order, according to the official Dell guide for this laptop.
3. Followed guides in this forum and Reddit forums.
4. Had Dell support come in and replace the motherboard.
The TB16 dock is still not detected, nor is any other Thunderbolt or USB-C device connected to the port on the left.
The TB16 dock, however, does charge he laptop and properly shuts it down if I press the power button on the dock.
I have checked the Bios settings, and also tried updates/fixes from Intel. Nothing works. The Thunderbolt firmware update cannot even run because it cannot detect the controller. It still says Controller Driver as unknown.
I have the i7 with 16GB RAM, and 512GB SSD.

Preferred Solution: XPS 13 9365 - Thunderbolt/Power port not working - TB16

I recommend downloading and running DAP. It can help sort out any driver and firmware related issues on your system

It's worked out well for many of us in the past.

You can download it direct from this link http://downloaddap.org. (This link will open the download page of DAP so you can save a copy to your computer.)

A: XPS 13 9365 - Thunderbolt/Power port not working - TB16

So you have loaded the Thunderbolt drivers (firmware and Controller) and it is enabled in the Bios?
There are also Dock Drivers.
I do not have any Thunderbolt devices so I cannot check.

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I'm having issues getting the TB16 to work with the XPS 15 9550. I successfully installed all the drivers in the proper order as documented prior to plugging in the TB16 for the first time.

I've verified that I indeed do have a Thundrerbolt port - there is a Thunderbolt symbol next to the USB-C port.
When I do plug in the TB16 the power button on it will power the system off/on.
I've used a usb-c to Displayport adapter and a usb-c to usb 3.0 adapter with a flash drive. Both worked successfully so the basic functionality of the usb-c port is working.

When I plug in the TB16 I never got an authentication window pop-up. In the Thunderbolt software it shows no attached devices.

The details setting in the Thunderbolt software looks fine, it appears to have the proper driver and firmware levels.

When I check the Thunderbolt driver it says that 'the hardware device is not connected to the computer'.
I'm at a loss - everything looks good except for the fact that nothing happens when I plugin the TB16. I'm wondering if there's a hardware problem with the Thunderbolt controller itself? I'd appreciate any help that anyone can give me.

A:XPS 15 9550 - Thunderbolt port not working - TB16

You might open the Thunderbolt software and set it to allow all devices.  I reset my system and redid the TB16 and it shows the cable and dock as approved devices.
It was not hard for me.  The thunderbolt controller is on the computer.  You show some correct info for that controller, although since I have a 9365, that specific info may be different, but you do show a different controller generation..

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I have been experiencing issues with my USB keyboard on my XPS15 9550 w/TB16 Dock when the Logitech G610 USB keyboard is plugged into TB16 USB 2.0 port in the back.
The keyboard will hang, accepting no input. or may hang on a certain letter, thus producing an "aaaaaaaa" across the screen until the keyboard "comes back".
Keyboard seems to work fine while plugged directly into the XPS15 rather than the TB16.
I also have an external USB drive for backups that I use connected to the TB16, although seems to be functioning fine. I have not had a backup fail, so, I assume it is working fine.
I have tried downloading all of the drivers, and re-installing them in the proper order according to the documentation while disconnected from the TB16, and then connecting to the dock.

Is anyone else experiencing a similar issue?  Is it the dock or the 9550?

A:USB Keyboard Hangs/Quits working on XPS15 9550 and Thunderbolt Dock TB16 . W10Pro x64

If you happen to run Citrix Receiver, make sure you're running at least version 4.9, since earlier versions are known to cause USB issues with the TB16, although that typically presents as the USB ports not working at all.  If not, then there was also an issue with intermittent USB device disconnects that was eventually solved through a combination of drivers and firmware, so when you say you've downloaded all of the drivers, please confirm that includes:
- Thunderbolt firmware
- Thunderbolt software
- ASMedia USB Host Controller driver

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I've bought TB16 and update all drivers (Dell Assist does it) and after lowing network settings to 75% my DELL monitors flickering less but now I have major issue since my Dell Adapter - USB-C to HDMI-VGA-Ethernet-USB stop working completely. When I plug in nothing happens (yes, adapter is working properly and yes cables are correct)
In first few days, randomly, Windows was enable to turn on output to adapter (after hour of plugin, plug out same adapter).
Now, it's completely useless. 
Can anyone help, any suggestion ?

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I just bought a new XPS 13 2IN1 9365 laptop. I have a Thunderbolt 3 external graphic card. I connect the XPS to the external graphic card via its Thunderbolt port. But the XPS's thunderbolt is not working. It cannot find the external display card. I called for technical service and the technical guy has changed the BIOS and even the whole main board. But the issue still cannot be fixed. Its thunderbolt port still cannot find the external display card when the card is plugged in. Is it Hardware or BIOS issue? Anyone can help?

A:XPS 13 2IN1 9365 Thunderbolt 3 Issue

The system has Thunderbolt firmware updates and a Thunderbolt controller driver.  I do not know if your system would need the firmware but did you install the controller driver?  If so, did it install OK?
Video might be involved with the Secure Boot situation.  Were the Thunderbolt boot settings enabled in the Bios?
I have a TB 16 dock through which I have connected a monitor and it seems to work OK.  Whether it is available for boot, I do not know.
Do you have a model for the external graphics card so perhaps I could understand how that connection is being made?
On another subject, is your system making any strange noises?

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 Nothing happend when DELL Thunderbolt dock plugged in. Monitor connected to the dock does not light up. In Windows device manager,  'Thunderbolt(TM) Controller -1577' state is "Currently, this hardware device is not connected to the computer. (Code 45)" I have updated Thunderbolt firmeware to latest version and the Thunderbolt soft,I have deleted  'Thunderbolt(TM) Controller -1577' item from device manager and reinstalled the thunderbolt several times. They didn't help..Please lenovo give me some information..

A:P70, Thunderbolt port not working

Is there anyone who has thunderbolt port working? Is there any lenovo person who can provide some information about this?Did lenovo know this issue? Is it a intel problem or lenovo problem? Are your man working on it? When this will be solved?     

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I own a Dell xps 13 9350 laptop.I'm trying to connect an external monitor through the Thunderbolt 3 port, with a USB-C to VGA adapter, but the laptop does not recognize that I've connected an external device at all.I suspect that maybe I'm missing a driver, I've tried installing Intel(R) Thunderbolt(TM) Controller Driver: "Chipset_Driver_D91CC_WN32_16.1.47.275_A02.EXE" but it was no good, still not working.How can I troubleshoot this? Could it be a different driver that's missing?ThanksShahar

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I have a 6th Gen X1.  One of the thunderbolt ports no longer works with the monitors on the docking station - the keyboard and mouse do work.  The monitors do work when plugged into the other thunderbolt port.  I am worried that one will stop working too.   I do not know of any damage or issues and I ensured the latest drivers were installed.   Any ideas on how to troubleshoot? 

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Hi All I have been crawling through these forums and Google in general, it seems a lot of people have similar issues. I run a T470s, I use a Startech USB-C to HDMI adaptor allowing me to connecto to 2 external monitors. I have done for many months and all was fine. I recently ran system update and found multiple drivers needed updating, I ran this and since I cannot use my external monitors.  Thunderbolt software is up to date, as per screenshot it doesnt show the controller version or details in lower half. Device Manager doesnt show the controller at all (even hidden devices). I have tried:uninstall/reinstall of TB SWrunning the firmware update tool but that just says 'No Active Controller' in the system.I have tried reinstalling every Intel driver availablethe BIOS was updated by System Update previouslyI have checked the BIOS settings and everything is enabled I found a system restore point from a few days ago which I think is before this started, rolling back to that allows the TB3 SW to show the controller version and a device showing in Device Manager but my monitors still dont work. A further reboot without changing anything takes me back to 'None' controller version and nothing in Device Manager. Open to the idea it could be my adaptor has died, I understand you sometimes need a TB3 device connected to update the FW (?) but I do not have any other devices, hoping to try my adaptor on another machine at head office next week to ... Read more

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Hi guys,
i have a new Dell Xps 15 9560 and TB16 thunderbolt dock. Everything works great, except.... If TB16 is connected to the laptop, it's impossible to shut down the computer. Instead of powering down, laptop restarts. When TB16 not connected, laptop shuts down perfectly. How to fix this? Thanks in advance!

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My XPS 13 crashes each time I try to connect the dock with Intel Thunderbolt program. I have updated the BIOS, and did all the firmwares and drivers listed in TB16 installation. 
What shall I do?

A:Dell XPS 13 OS crashes when configured to use TB16 Dock in Thunderbolt app

Which version of the XPS 13 do you have?
Did the software and Firmware update install normally without the Dock attached?
Have you tried running the Dock without any outputs connected?
Did you get any popups related to allowing certain connected devices?
Look in the Settings and Details to see what TB controller you are using and if it does not show as Unknown.

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I just bought a Dell TB16 USB-C/Thunderbolt 3 dock for my Dell XPS 9550. I updated the BIOS and drivers for both units using Dell Command Update, but now every time I boot up my computer I get a message stating "your PC may need updates for the Thunderbolt 3 port to function properly. For more information go to thunderbolttechnology.net/updates". That link, in turn, refers me to the Dell page that tells me to do the updates I've already done.
It's annoying to get this message even though everything appears to be up to date. Anyone run into this and have a solution?

A:Dell XPS 15 9550 with TB16 Dock Thunderbolt message

You have done the firmware update which might be required on some systems?

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I have only had this laptop for a month or so,  but the Thunderbolt usb-c port stopped working. I can still use this port to charge my laptop, but it won't connect to any other devices nor output video to an external monitor. Has anyone encountered this problem before? Does it mean I need to send my computer back for a repair? Thanks.

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I have a Dell Thunderbolt Dock TB16 - 240W docking station for the XPS 15 9560. It comes with a 0.5m USB Type-C Thunderbolt cable. Is there a longer cable, such as a 1m cable available for the TB16?
The TB16 was shipped from Dell with an instruction booklet entitled "Thunderbolt 3 (USB Type-C) Dock Cable Installation Guide." The book has instructions on how to remove the shipped cable and replace it with some cable that is received as a separate shipment. Does anyone know the purpose for those instructions? 
I'd like to suggest that the above questions would be a nice addition to the TB16 FAQ... adding some info on cable length, cable length restrictions, future plans for differing cable lengths, etc., might help users such as myself. I see others out there which have concerns about short cable length so that's why I think the answer to the above would make good TB16 support KB articles or FAQ entries. 
Thank you!

A:Dell Thunderbolt Dock TB16 Maximum Cable Length

The included instruction guide is just in case you need to remove the cable for replacement.
My cable is around .4 meters or 16 inches.  I do not know of other length cables are available.

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We have a Dell Precision 5520 that uses a TB16 docking station that all of a sudden is having difficulties connecting to our VPN. It was fine earlier in the day. We tried clearing the DNS cache and tried a winsock reset. THe drivers are up to date and everything. 
Also tried to reboot the computer multiple times.
Even tried a K17A Dock and had the same issue.
We were finally able to get the computer to connect to the vpn once we used a usb net adapter to plug the ethernet cable into.
Tried plugging the usb adapter into the computer directly and into the dock. It worked whether it was directly connected to the computer or the dock.
It only does not work when we connect the ethernet cable to into the lan port on the TB16 and K17A dock. And only for the one computer.

At a loss, any ideas?

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Has anyone had experience with this. I just purchased an XPS 15 9560 with a TB16 dock and I'm hoping to use the dock and my old Apple Cinema display, but I can't seem to get the monitor to work in the dock. I purchased an Apple Thunderbolt 3 to 2 adapter and the screen works fine when I hook it directly into the laptop, but I get a USB malfunctioned error when I hook it into the dock. Any information or tricks anyone else has found would be helpful. Thank you in advance.

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I have just received the TB16, that I use with my Precision 5510. I have connected my mouse and keyboard with the Logitech Unifying Receiver on a USB port. The connection works, but the mouse freezes about half of the time, and the keyboard misses many of the keys typed. So it is basically not usable. When the receiver is plugged directly into the computer's usb plug, the mouse and keyboard are perfectly smooth.
I have tried to connect the received on a DA200 connected on the Thunderbolt port of the TB16. This also works smoothly. So the problem only comes from the USB ports of the TB16 (both USB 2 and USB 3 ports).

A:Dell Thunderbolt Dock TB16 -240W & Logitech Unifying Receiver

Do you have any wired devices you could check.  It wasn't long ago the Logitech wireless devices had problems with Win 10.  
Otherwise, there are threads about the TB16 and Bios updates on other systems concerning USB compatibility.

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I myself own an XPS 15 9550 and noticed that I was not getting the full Thunderbolt 3 speedover it's Thunderbolt 3 port. I expected speeds around 2700MB/s, because of the overhead withthe theoretical gross speed of 3870MB/s, but I only ever got 1400MB/s out of it.
I did some digging and found out that none of the XPS notebooks with Thunderbolt 3 are evenable to achieve the full TB3 speeds, because they are only connected with two PCI Express lanes (x2.3).You can read more about this on the following links:Dell Subreddit PostChipset Digging on Forum

Thunderbolt 3 and the promised speeds were the MAIN REASON I even bought this notebook.I feel very cheated here.

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I purchased the Thunderbolt 3 Dock with my Yoga 920 as it was listed as an accessory during my Yoga 920 purchase back in November.  I finally got around to setting it up and I can't seem to get the power button the dock to turn on my laptop.  The button glows white when my laptop is plugged in but the button will not turn the laptop on.  I have my power button option in Windows set to "when i press power button while plugged in, the laptop will go to sleep."  So even while the laptop is connected to the dock via USB-C/thunderbolt and the laptop is on, when I push the power button the dock, it doesn't put the laptop to sleep either--it does nothing. Googling around, I see there is a newer dock called USB-C dock and it's listed as compatible with the 920 whereas as the Thunderbolt 3 Dock is not listed as compatible.  Could this be the issue?   I also have thunderbolt software installed and it detects the dock in the software. I need some help please!

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Kind of a multi part question here.
I have a Precision 7510 and a TB16 Dock. I have the quadro m2000 graphics card. When I have my dock connected I connect a display port cable from my dock' s display port out to my dell 4k monitor. The max resolution is either FHD at 60 hrz or 3840x2160 at 30hrz. The 30hrz option is not acceptable for me. I end up trying it with a mini display port to the dock with a display port to the monitor adapter cable that came with the monitor. That gives me the full 3840x2160 resolution.
Two questions here.
1 why am I not getting proper output from the full size display port on my dock and is there something that can be done to correct it as I think I should be able to connect another 4k monitor and was thinking about getting another of the dell ones but don't want to unless I know it will work.
2 I see a lot of info on the different revisions of both display port and hdmi. I think the latest display port revision is 1.4 or something and  hdmi is 2.1. What version is my machine able to support? In looking for help online with question 1 I found info that makes me believe it could be related to what version of display port is supported by my machine. That is why I am looking for that info.
Thank you

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I already typed something here, since I thought it is related:https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/X1-Carbon-6th-gen-BIOS-update-broke-external-... Pulling Thunderbolt cables was fine. After a while:Pulling Thunderbolt cables gave me 1 in 3 cases a bluescreen (internal power error). I did a BIOS / Thunderbolt / Driver update on 21th of May 2019. Everything was fine, restart worked. Went to work, this time, turned into standbye before pulling the cable. Everything was fine. At home, I opened the Screen after getting out of Sleep (old Linux Standby), saw the welcome for a short moment, and than bluescreen again.  Reboot, ... freezes in BIOS. Directly at the "Lenovo" Splash screen, before having the chance to put on the finger on the fingerprint reader.Super laggy. Tried EVERYTHING mentioned in this forum, enabled/disabled all settings in BIOS, had to reset with the button in the bottom with a paper clip, tried to deactivate internal battery. By a chance of 1 in 4 I could get into the BIOS or select a boot media.  Lenovo hardware test says, that everything is fine. Have been many times, close to a brick, since it hangs directly after pressing the power button. By chance could boot, made a backup. HDMI is also not working. Does not recognize any thunderbolt devices. Flashed old BIOS version, no difference.  What makes a difference: completely disabeling thunderbolt in bios. Than BIOS/booting works like a charm, b... Read more

A:X1Carbon6th, Pulling Thunderbolt cable broke Thunderbolt CHIP, BIOS is freezing, HDMI not working.

For me it sounds like the Thunderbolt Chip or Firmware is broken. Similar to the more popular bricking of Yogas, P51, before. I maybe could flash it manually like discribed here, but I guess, this is against warranty regulations: https://posts.nadim.computer/2018/10/26/repairing-a-thinkpad.html  

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J'ai acheté ce portable neuf par correspondance et j'aimerais savoir ce que j'ai comme port sur le côté droit de l'ordinateur. Je devais avoir un port Thunderbolt 3 mais il semble que ce soit un port mini-display. J'aimerais que l'on me précise la réaliser à l'aide de l'information suivante :
HP Spectre Pro x360 G2 Convertible PC

NOTEBOOK/TWO-IN-ONE/CORE I5 6300U/2.4GHZ/8GB-DDR-1600/256GB SSD M.2/13.3IN/W10P 1
Mon objectif était d'acheter une Docking station du type Thunderbolt 3. Est-ce que je le peux avec cet appareil ? Sinon, que me recommandez-vous comme docking qui contient le maximum de ports pour cet ordinateur ?
Henri Frappier

A:Port Thunderbolt 3 ou port mini-display



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Hello,the thunderbolt on my X380 Yoga completely stopped working. As I try to connect a P27h for instance, the laptop charges but does not recognize the monitor or USB Hub.I installed every update available on system update and tried to update the Thunderbolt Software and Firmware. The software installed fine but upon updating the firmware the following promt appears:    When I check the version inside the Thunderbold software, this is what shows up:    I am running Windows 10 Home 1803. Any idea why this is not working? Is my thunderbolt controller not working properly?Thanks

A:Thunderbolt not working / Unable to update thunderbolt firmware

There is an issue with the update for the tunderbolt firmware when updating through the system update utility. This is a known issue that the Engineering department has been working on. The only known resolution to this issue so far has been to replace the system board. Im sorry for the inconvenience this is causing. If the device is still under warranty i would speak with the support center to have a tech install a new board.

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I have just purchased a Dell XPS 13 2 in 1 (9365) and want to buy a Power Companion 18000.
I see that the connectors included are a large and small round type and my XPS uses USB type c to charge through.
Is it compatible and how do I connect it please?
Thank you.

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I suppose I have two problems.  After the new Creator's Build upgrade, I started seeing this system will stay in Modern Standby all night where before it would go into hibernation.  I also notice the system will not shutdown but go into the low power mode.
Because of this, the battery drains around 2% per hour while the system has the lid closed and put away.
Along with this, I notice whenever the system starts, the Airplane mode is automatically engaged and I cannot find a way to stop this from happening.
This is happening on the OEM install and on a clean install.
Neither the Sleepstudy report or energy report yields any useful info.  This upgrade (16299.19) seems to have a new battery manager in place, maybe it is involved somehow.


A:XPS 13 9365 2-in-1 Power problems and Airplane mode.

I have exactely the same problem
Since "Fall Creator"  update, the notebook simply do not sleep or hibernate. Instead it goes in AIRPLANE mode.
It seems like a bug with adpater = in fact if you put computer twice to sleep it goes out from AIRPALNE mode.
ONly way to save the batery to swithc off totally !!

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Would someone provide me with the Dell part number for the 180W power adapter that ships with the TB16 dock? Thank you.

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i have a HP pavilion G42 laptop running on windows 7. Few days back, my battery stopped taking charge. I checked my battery with another laptop, it took charge as usual. So i got to know i didn't have problems with my battery. I checked my charger and it was working fine too(with another laptop). When i took my laptop to a HP authorized servicing center, they said the power port of my laptop was damaged and that they needed to replace the whole motherboard for that. As it is a costly option, I would like to know that is there any other solution to my problem? Can only the power port be replaced/repaired and not the whole motherboard?

Thank You.

A:Power port Not Working

That is not a practical repair. The cost of the parts and labor would approach the cost of the motherboard.

IF you could do the repair yourself (must have soldering proficiency and tools)

and IF you could get your hands on a motherboard circuit map

and IF you had the testing equipment (to test where on the circuit the failure occurs - the port is only the beginning of the circuit)

and IF the failure occurs in a replaceable component (it does not need to be just the port - it could be the voltage regulating chip, the power source switching relay, or anything in between)

and IF you could get the replacement component (almost never comes from the laptop or even the motherboard manufacturer - usually some 3rd party electronics firm)

THEN you might be able to make the repair economically.

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I'm guessing I'm just missing a setting or configuration but I tried to set it up in the bios like the troubleshooting suggests and no go. I still have to plug in the AC adapter to get power. 

A:XPS 15 9560 not getting power from TB16 w 240W

My 9365 uses the Thunderbolt for Power, so the TB 16 plugs into that same port.  Your system seems to use a normal power adapter in it own port.  The manual states the USB c port on that system does Power Sharing.. Are you certain it is supposed to power the system that way?

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I'm using Dell n7110, Win 7

Recently I bought usb fan (small one, not the pad) and it worked good for few days, then I started to get this message:

Power Surge in hub port
A USB device has exceeded the power limits of it's hub port. For assistance in solving this problem, click this message.

I've read lots of posts about this but can't find the solution.
I have 3 usb ports, now only one of them works. I can't have 2 usb cables or anything plugged in at once.



A:Power surge/usb port not working

The error usually means a USB device is drawing too much power. It may or may not have already caused USB power damage. If the issue only arises when using a particular device, then that device is likely the cause and/or faulty. If it now occurs with all devices, I'd suspect the USB controller is damaged/faulty.

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I am about to order an XPS 15 9560 and looking at TB16 dock ... in specs it shows XPS 15 as supplied with 130W power adapter but in specs for TB16 the chart shows 240W and says "NOTE: A system requiring more than 180 Watts must have its own power adapter attached"
Does that mean that for the XPS 15 i need to connect the power cord even if I am using the TB16 dock? I thought the TB16 would mean I could just use the single connection.

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My area experienced a power outage last night during a thunderstorm. My computer is plugged into a surge protector, but my modem is not, and I'm using a wired connection. When I got home from work, I discovered that not only did the power outage knock out my internet service (something on the ISP side) but it also did something to my ethernet port.

I can see the device in the BIOS, and in the Device Manager, and also in Network Connections, but no matter what I plug into it, it just says "network cable unplugged". I definitely have a cable plugged into it and into my modem (which is on and working, just not connecting to the internet), and I know that the cable is fine (I tested it for continuity, and I tried a different cable). When I plug something in, the lights that normally indicate activity (or at least the existence of a cable) don't light up, so I'm a little worried.

I realize that a surge from the power coming back on might very well have fried the circuitry, but I'm confused because (knock on wood) nothing else appears to be damaged in my computer, and the modem itself appears perfectly fine (with the exception that it won't connect to the internet which, like I said, is due to a problem with AT&T's lines). Is there some diagnostic that I can run or something I can do to verify the integrity of the ethernet port? If I look at the motherboard itself, would it be possible to see any potential damage?

I would think that i... Read more

A:Ethernet port not working after power outage

A new network card about the cheapest thing you can purchase, in respect of hardware.

It sounds like your ethernet port has received some volts through it, due to the thunderstorm. Its possible it has caused more damage unknown to you currently as well.

If it worked before the thunderstorm, and thats the only change, thats the reason.

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After a power surge on hub port when attaching a card reader to a front USB port one of my external hard drives disappeared.

The drive works fine and is now on another USB port.

The non functioning rear USB port has the following properties (image 1) and the location address looks weird compared to the functioning USB port below it (image 2):


I have tried uninstalling/reinstalling the driver and disabling/enabling, rebooting etc and it still will not work.

Any suggestions are welcome.


My system specs:Windows 7 Professional 64 bit 6.1 Build 7601
Intel i7-3770 @3.40GHz
ASRock B75 Pro3-M
Memory: 32.00 GB
(1) Hitachi HCS5C1050CLA382 ATA Device
(2) WD 10EADS External USB Device
(3) WD Ext HDD 1021 USB Device

A:USB Port Stopped Working after Power Surge

After a power surge on hub port when attaching a card reader to a front USB port

How do you know there was a power surge at this time?

I am not sure your first screen shot is of the port, I note it says device. But I agree, the location looks bad.

I have tried uninstalling/reinstalling the driver and disabling/enabling, rebooting etc and it still will not work.

Have you totally shut "off" your computer? Not just reboot, or "shutdown", but totally off by unplugging from the wall (or setting the master power switch on the back of your PSU - IF it has the option - to off). This is the only way to totally remove all voltages, in particular the ATX Form Factor required +5Vsb standby voltage PC power supplies supply when the computer is simply shutdown (which is really standby mode).

Note there are several "Wake on..." commands set in the BIOS Setup Menu that use this +5Vsb voltage to keep various circuits and settings "alive" when the computer is in standby mode. These include Wake on Mouse and Wake on Keyboard - which obviously rely on USB. That means USB ports are still alive even when you have exited Windows and shutdown the computer.

If me, I would uninstall your device and the drivers, shutdown, then remove power from the computer for 10 - 15 seconds to ensure all standby settings are released. Then connect and boot and see if the device is detected, drivers load, an... Read more

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XPS15 have itself 130w ac adapter originally.
I am confused. 
If the130w adapter is enough for xps15, can I buy the 180w version(NOT  240W) TB16 for my Xps15?

A:Can TB16 with 240w supply enough power to XPS15 9550?

Hi cvn21,
You will need the 240W adapter to supply enough power. Please see here:

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@mee_anders I have the same problem and I'm extremely disappointed in HP's lack of support. I've tried and tried to convince them to take responsibility for this issue but they won't. I'm guessing you saw the thread "HP - Spectre x360 power problem" - I'm actually wondering if some of us who were told we need to replace our motherboard actually have a defect part that you mentioned. If only they would help us figure it out without charging $500....

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The power port on my Spectre laptop (Product No: K6C18AV) just stopped working. The power cord is plugged in but it is not supplying power to the laptop and is not charging the battery. The small LED next to the power port is dead, no amber or white color. I've tried a different power adapter and different outlets in my house. After doing some reading on these forums, it seems others have had a similar problem. I bought the laptop in April 2015. Warranty expired April 2016. I called HP support. They said the motherboard needs to be replaced. Minimum charge $600. Fudge, I might as well buy a new laptop.   So Questions:-Has anyone had luck replacing the DC power port inside the laptop? I found a part number PN 801513-001 on one of the forums. -Has anyone had any luck convincing HP this is a common problem and should be covered as a defect even though the laptop is out of warranty?  

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Trying to connect Yoga 920 laptop to TV using a Moshi USB-C to HDMI Adapter and 2m Hdmi cable. After plugging in port getting the error attached. Power surge on the USB port - A USB device has malfunctioned and exceeded the power limits of its hub port. You should disconnect the device.

A:Yoga 920 USB C to HDMI not working - power surge on the USB port

Start by making sure everything is up to date using Lenovo Vantage. Drivers, BIOS, the works.

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I just purchased a new Dell PC.  I now get this message when I turn on my speakers:
power surge on the USB port. Unknown USB device needs more power than the port can supply. I have no idea why or how to fix it. Can anyone help me?


A:power surge on the USB port. Unknown USB device needs more power than the port can supply

What specific Dell desktop computer?
What specific speakers?

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Two issues I have found with the XPS 13 2 in 1 laptop I recently got:
1.- The most upsetting, that after the "Urgent" BIOS update suggested by Dell, the touchscreen completely stopped working, so my 2 in 1 is now a "1 in 1".
2.- The delay in the Touchpad and mouse response (even when the setting is at the 'no delay' option) is too long, up to 2 seconds.
Specs below. PLEASE! somebody help me!

A:Dell XPS 13 9365 Touchscreen not working

Where did you get the info from you are showing.  Since the processor is faster than that, you may be seeing the actual speed or it may be inhibited in some way.
Any messages in the Event Viewer concerning processor being throttled?
Have you made any changes to the basic system install?
Is the touch screen device showing up in the Device Manager with the Human Interface Devices?  Are there any Unknown devices showing anywhere in Device manager?

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I have a HP ZBook 15 G3 Mobile Workstation (Engery Star)- Product Number - V2W12UT#ABA. It has 2 USB Type C Thunderbolt Enabled Ports.   Not quite what it is used for.  Can you use a thunderbolt adapter for an Ethernet cable which uses Giga Power and a HDMI Cable, etc.  Basically the thunderbolt adapter would have more than one port.  Am i understanding this correctly?  If so, what product do you recommend?  

A:Thunderbolt Port

Again, I have that same laptop and I happen to have in my bag a thunderbolt/USB-C to HDMI adapter and one that has a gigabit ethernet and 3 x USB 3.0 ports. HP also makes a Zbook dock I am using which has a DP and an HDMI, VGA, gigabit ethernet, a few USB 3.0 and a couple extra USB-C ports.  P/N P5Q58UT#ABA There are lots of adapters with multiple functions. Thunderbolt can allow some really amazing number of additional devices to be connected through one port like I believe 4 x 4K monitors.

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Was working fine until today. Looks like the thunderbolt cable's symbol is no longer lighting up and nothing is being transferred to my laptop (usb's, dvi, ethernet cable). Has the cable defected in this case? I only had this dock for 2 weeks

A:TB16 stopped working

The dock cables are actually removable, so if you happen to have access to another TB16, you can try swapping the cable with a known good unit.  The manual available on support.dell.com shows how to do it, but basically there's a screw hiding under a rubber foot/flap on the underside of the dock where the cable attaches.  Sorry to hear you're already having trouble!

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I never had a problem before but one of my usb ports stopped working. I just get a message saying that i exceeded the power level. When i tried it on other ports that particular mouse doesn't work in any of them, however my other mouse which is wireless works.

Any ideas

A:Usb port for wired mouse stopped working, says exceeded power level

Probably a short in the mouse circuit board or cable and is drawing excessive power from the USB port. May be time for a new mouse.


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I have a ThinkPad P51. I am trying to set up Thunderbolt networking between my P51 and my 2017 Macbook Pro. When I connect the cable from my P51's TB3 USB-C Port to the TB3 USB-C Port on the Macbook Pro, I get this pop-up:  Also, my Thunderbolt networking options are grayed out: The Networking Driver Version is "Unknown":  And finally, I'm unsure if this is normal or not, but when I pull up the Device Properties for Thunderbolt(TM) Controller - 15D9 it looks like this: Is my Thunderbolt port faulty? I did a complete uninstall of the Thunderbolt software and drivers, followed by a re-install using Lenovo System Update, reboot - same results. 

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Is it possible to use this port as a simple USB 3.0 port ... no Thunderbolt?  USB-C to USB-3.0 adapters are readily available, and this would provide an extra (3rd) rear USB port; useful when the dock isn't there and extra USB ports wanted.

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Hi, I think I'm having some problem with my Yoga 920's thunderbolt port. I bought a StarTech thunderbolt 3 dock. When I first time plug in the dock, everything works fine the thunderbolt software pops up and ask me the authorized the new dock. And I click always trust this device. Then the windows crushed with a blue screen and a QR code on it. After 920 restarted, and I tried the dock again, it was identified as USB 3.1 hub but no USB connection. And when I tried to open the thunderbolt software, it shows me the following warning.I tried to update the driver, but the installer said it was all ready. And then I downloaded HWINFO64 to check, I could not find the thunderbolt 3 controller under the PCI-Express X4 BUS. Is that means my thunderbolt 3 port is broken? What should I do with this? Btw, when I plug in the thunderbolt 3 dock, the powersupply is also connected, and the dock also provide the power, two power supply input at the same time, will that be a reason of the crash which also burn the thunderbolt 3 controller? Thank you. 

A:Yoga 920's thunderbolt 3 port

Just tried USB 3.1 card reader, port's usb function works well. 

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