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Thunderbolt docking station and BIOS power warning

Q: Thunderbolt docking station and BIOS power warning

I have several Dell 5510 Precision series with the Thunderbolt USB-C adaptor. Each 5510 is plugged into a Dell K17A docking station powered by a Dell 130W power supply. When I connect the docking station via its USB-C connection to the 5510 laptop, I get a BIOS warning that it only sees 95W of the 130W. But the battery charges and the laptop runs. I can turn off the power warning in the BIOS (which is current) but I worry about powering the 5510's Nvidia video card and other components if the BIOS is not seeing all 130 watts.
Plugging in the 130W psu supplied with the laptop has no such BIOS error.
Why does the Dell docking station K17A not see the Dell power supply? Is it throttling it?

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RELEVANCY SCORE 200
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RELEVANCY SCORE 102.4

Ever since one of the firmware updates on my t480s, I now get this silly message on reboot about a low power AC adapter. I only get this message when connected to the docking station so it's certainly not a bad AC adapter. Any way to have the firmware stop doing this?   

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RELEVANCY SCORE 90

I am struggling with my docking station for my ThinkPad 480s.  I have two docking stations.  One by Lenovo type 40AJ and the other by DELL.  The dual monitor DP setup resets every 3 to 5 minutes causing the monitors to go black with the Lenovo UltraDocking Station.  So I switched out that docking station with the DELL universal docking station.  When I use the USB C/Thunderbolt port the same thing happens.  When I use the USB 3 port, I have no problems.  I have looked in the event viewer and I can see where the laptop switches from external to battery power, but nothing else.  Also, I have updated the drivers for Thunderbolt. Has anyone seen and resolved this issue?

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RELEVANCY SCORE 88.8

I recently received a ZBook 15 G3 with the ZBook dock. After installing Ubuntu 16.04 the dock didn't work at all, it only powered the laptop. I changed the BIOS security configuration for the Thunderbolt port (under Advanced, Ports) and was able to get an external disply working.However, the USB ports on the dock are still not working, the audio jack isn't working and the ethernet port isn't working. When connecting a cable to the ethernet port on the dock the laptop will show that it's connected but there still isn't any internet connection.I will appreciate any help as right now the dock is pretty much unusable.

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RELEVANCY SCORE 88.8

Hello, Notebook is super noisy and dock wire is way too short to put it somewhere far away. I though may be it's possible just pluging power into notebook and connect docking station via Thunderbolt only but not sure if it will work and if docking station in fact needs external power which thunderbold cable will not be able to provide.

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RELEVANCY SCORE 88

I have installed the drivers and rebooted, but it still does not show up.  The docking station is a 40AC0135US which was indicated as the correct docking station by Lenovo's docking station finder.    I have no idea how they have managed to make this so difficult.   

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RELEVANCY SCORE 88

I have installed the drivers and rebooted, but it still does not show up.  The docking station is a 40AC0135US which was indicated as the correct docking station by Lenovo's docking station finder.    I have no idea how they have managed to make this so difficult.   

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RELEVANCY SCORE 88

I am connecting my X1 Extreme to Thunderbolt 3 Docking and find out the Ethernet is not working. By looking into network adapters in Control Panel, it shows the Ethernet of the docking station is disabled. However, whenever I try to enable it, it automatically goes back to disabled state. Any help?

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RELEVANCY SCORE 88

I have a 5th gen Carbon connected to the Lenovo Thunderbolt docking station. After some time, perhaps a sleep or hibernation, the laptop loses ethernet connectivity and can only use wifi. ipconfig reports media disconnected. But if I do a restart of Windows 10, ethernet is back, no problems. Also if I use the ethernet dongle connected to the laptop's weird little ethernet port, there are no issues.  There are other issues with the dock, like intermittent loss of wireless keyboard and mouse connectivity, but I'll worry about those in another thread. 

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RELEVANCY SCORE 88

Hello, does anybody know if ThinkPad Thunderbolt 3 Dock is compatible with T480s? I have installed all the drivers  https://pcsupport.lenovo.com/ie/en/products/accessory/docks/thinkpad-thunderbolt-3-dock/40ac/40ac013... I have searched this forums and followed some advice re BIOS settings for TB3 (didn't make any difference). Everytime I connect this dock the mesage comes up "Display connection may be limited".All it does it charges the laptop, but no USB devices work (mouse, keyboard), also Monitor connected through display port does not work. I replugged and restarted everything multiple times. I also updated all possible drivers for T80s (Win10 x64). Any ideas how to get this working, or are those products not compatible? Many thanks for assistance 













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A:T480s - unable to use "Thunderbolt 3 Docking Station"

Okkkkk I got it solved... very embarassing. On the laptop I plugged originially USB-C cable to the same port as charger.Next to it is another port that looks like something slightly else, but there is actually usb-c in it too. Connected and all is working Take this tip if you struggle like me, hah  Thank you

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RELEVANCY SCORE 86.8

I just purchased a new XPS laptop and the D3100 docking station. I need to connect a Focusrite Saffire Pro 14 that has a 6 pin Firewire 400 out.
Should I connect directly to the XPS via the Thunderbolt port using the Apple sold Thunderbolt to FIrewire adapter?
Is there a way for me to connect with the dock via the Thunderbolt compatible USB 3 ports?
Any help is appreciated, thanks!

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RELEVANCY SCORE 86.8

Hello,I have got a Dell thunderbolt docking station but it's not working with my Yoga laptop. I have installed the docking station driver and it is able to deliver the power to the yoga but neigther the LAN connection not the VGA display is detected. Please advise. Dell docking station model:https://www.dell.com/en-ca/shop/dell-thunderbolt-dock-tb16-240w/apd/452-bcnu/pc-accessories TIA

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RELEVANCY SCORE 86.8

Hopefully someone here can help me before I get an aneurysm. I got the HP Thunderbolt 3 Docking Station (150 watts, model number P5Q54AA). Everything is connected ok but as soon as the dock connects to my laptop it crashes my computer instantly and generates the blue screen of death. It doesn't matter if a monitor is connected or not. There was a couple of scary moments when it sent my fans into overdrive and started beeping loudly as if a bomb was ready to explode. I spent more than eight hours on this yesterday and at this point the dock seems like nothing more than a nice looking brick. I have went through all of the help threads here and tried everything. I updated the bios from 1.14 to 1.15I updated all audio drivers, graphic drivers, firmware drivers, chipset drivers, and thunderbolt related driversI rolled back everything twice and reinstalled everythingI removed the security setting in the bios that relates to thunderbolt devices connectingI've made numerous other changes that didn't work and had to roll backNothing seems to work. I am puzzled as to why HP haven't set this up better. Surely there needs to be a dedicated app for this that handles everything and installs and removes all necessary drivers. By the looks of it this docking station has been a mess from the start. What else can I do at this point? 

A:Thunderbolt 3 Docking Station Crashes HP ZBook Studio G3 as...

It is possible you have a defective dock. I have exactly the same setup and went through some difficulties when I first got it but turning off Thunderbolt security made mine work. It is still occasionally finicky coming out of sleep mode or if I disconnect the laptop and use it as a laptop then try to reconnect the dock. Takes a restart or 2 sometimes but mine generally works well.  I would suggest your problems point to a bad piece of hardware. 

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RELEVANCY SCORE 86.8

Community: we just recently purchased a brand new Thinkpad X1 Extreme laptop and Thunderbolt 3 Workstation Dock.The Laptop is awesome but unfortunately we're on our second dicking station and wondering what we're doing wrong--or if we have a defect.  The docking station came with a 230W and 65W AC power cord, and the dock has both a 230W/170W port and 135W/65W power port. When the 230W cord is plugged into the 230W port, the dock doesn't turn on (nothing plugged in). When the 65W cord is plugged into the 135W/65W port, it lights up but no network when a laptop is plugged in or charge. The only way I get a light on the station is to plug the 230W cord into the 135W/65W port, and then when a laptop is plugged in I get network and charge. We contacted Lenovo and they sent a replacement as they admitted it was not working as it should. The second one also exhibits the exact same behavior and we are at a loss and ready to return for a refund.  I also don't want to plug a 230W power brick into a 135W/65W port for fear of overheating. Anyone else experience this or have any ideas, we'd like to hear them.  Thanks.

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RELEVANCY SCORE 86.8

Hello ... I use an Thinkpad Yoga370 together with the Thunderbolt 3 Docking-Station for business. For private use I have an Thinkpad X1 Carbon 4th Generation. Is there any possibility to connect it to the Thunderbolt 3 Docking-Station e.g. by an adapter? So I would like to use the Thunderbolt 3 Docking-Station with connected Screen, Keyboard, Mouse with both Laptops. Thanks for your help and best regards ...

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RELEVANCY SCORE 86

Hello Team,
Currently we have one Group policy which is block Thunderbolt docking station due to security reason. More recent versions of Windows 10 (1809 we are currently using) have a built-in ?Kernel
DMA Protection for Thunderbolt? 3? that should be used instead. To do that we need to enable Kernel DMA Protection , how we can enable it?

In BIOS VT already enabled and also enable the Windows Defender Core isolation. Kindly help to mitigate the issue.

Thanks
Amit Laha
  

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RELEVANCY SCORE 86

Hey, Just got my new X1 Extreme Gen 2 and the docking station (which doubles as a charger) doesn't charge. All other functionality of the dock works. The dock brand is Belkin Thunderbolt 3 Express Dock HD and the model number is F4U095. I have already updated the bios and software in line with https://pcsupport.lenovo.com/sk/en/solutions/ht508988 even though my model isn't listed as an affected one. Thanks in advance.

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RELEVANCY SCORE 86

Hey, Just got my new X1 Extreme Gen 2 and the docking station (which doubles as a charger) doesn't charge. All other functionality of the dock works. The dock brand is Belkin Thunderbolt 3 Express Dock HD and the model number is F4U095. I have already updated the bios and software in line with https://pcsupport.lenovo.com/sk/en/solutions/ht508988 even though my model isn't listed as an affected one. Thanks in advance.

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RELEVANCY SCORE 86

Hey, Just got my new X1 Extreme Gen 2 and the docking station (which doubles as a charger) doesn't charge. All other functionality of the dock works. Dock works fine with both my Macbook Pro's (13 & 15). The dock brand is Belkin Thunderbolt 3 Express Dock HD and the model number is F4U095. I have already updated the bios and software in line with https://pcsupport.lenovo.com/sk/en/solutions/ht508988 even though my model isn't listed as an affected one. Both my Apple power adapters work and charge the X1 Extreme also... is it because the thunderbolt from the dock is also carrying data and video? Surely not? Thanks in advance.

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RELEVANCY SCORE 86

Heyo,so i ran into a problem at work with a notebook from an user.She has the Thinkpad P51s with a Thunderbolt 3 Docking Station and 2x Dell U2717D.If one of the two monitors is connected via HDMI to the Notebook directly, the bit depth is at 8-Bit.If the 2nd monitor is connected via DP to the Dock, the bit depth drops to 6-Bit, which i can't change. The 6-Bit creates a horrible banding, especially in photoshop with color gradients you can see the banding in full effect.Firmware for the dock is up to date.Anyone else ran into this issue?EDIT: Wrong board, sorry

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RELEVANCY SCORE 85.2

HelloWhen 1903 Windows update installs on my Windows 10 64 system, the docking station stops working (everyting including video, usb, etc)I rolled back 1903 and it works. So it is definetely an issue with compatibility of the docking firmware/software with the 1903 update, as all my drivers should be up to dateDoes anyone know if there is official word on an update/patch that will solve the above?BestOmar

A:Lenovo Thunderbolt USB C Docking station does not work after I update Windows with 1903

nice post Padron Cigars

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RELEVANCY SCORE 85.2

I have just bought a Dell XPS 15 (9560) and a Dell WD15 docking station with 130W power brick (same wattage as the laptop's AC-adapter). When I only use the docking station to power the laptop the discrete graphics card (GTX 1050) does not seem to work. When I am in a game (eg. Starcraft 2), I get like 15 fps with the NVIDIA recommended settings. Then when I plug in the laptops's own power brick (while still in the game) I get an immediate four-fold increase in framerate. When I unplug the laptop's own power brick the framerate drops down to 15 fps again in a heartbeat. Furthermore, when I only power the laptop through the docking station, I cannot even find the discrete GPU in the list when I'm trying to run the Geekbench 4 compute benchmark (OpenCL). Only the integrated graphics shows up. When I plug in laptop's power brick I find GTX 1050 in the list.
I have run the Dell Command Update application and all my drivers and firmware are up to date. 
Does anyone have any idea to what the problem could be?

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RELEVANCY SCORE 82

I have a t480s coupled with basic docking station type 40AG. everything was working perfectly fine until yesterday I updated the Thinkpad docking station utility unsuccessully. this generated an error message any attempt to load the docking station driver (see enclosed file description) proved unsuccessful. Any possibility to restore the situation ex ante or to overwrite these errors> thanksenclosed file description and error message

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RELEVANCY SCORE 78

I contacted Lenovol support and they send me a replacement unit. The the replacement unit has the same problem. Thinkpad Thunderbolt 3 docking station does not charge Thinkpad P51 battery.  I need to plug in the power adapter for both docking station and notebook.  Does anybody have similiar problem? 

A:Thinkpad Thunderbolt 3 docking station does not charge Thinkpad P51 battery.

Everbody's p51 would be the same.  The thunderbolt port won't work as a charging port.  The thunderbolt specs specify 100w max.  That's not enough.  Your thunderbolt port is not for charging.  To charge via the dock, you need a workstation dock, not a thunderbolt dock.  A thinderbolt dock can charge things like an x1 carbon (5th gen) or x1 yoga (2nd gen)

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RELEVANCY SCORE 77.6

Hello,
We just purchased a large amount of Latitude E7470 and E5570 Laptops with the Docking Stations.  These are currently running Windows 7.  The issue I'm seeing is that when the laptop is docked and off, we are unable to turn them on using the docking station power button, we have to use the power button on the laptop itself.  Un-docking and re-docking causes the light to sometimes light up and then we can use the power button.
Is these expected behavior?  It seems to be a pretty big issue.
Thanks!

A:Docking Station Power Button

That is not expected behavior.  What wattage power supply are you using with the docking stations?  I believe the E7470 and E5570 require the docking station to be powered by at least a 130W AC adapter.  You might also want to try updating the BIOS on a test system if you haven't already just to see if that improves things.

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RELEVANCY SCORE 77.6

Can anyone advice me as to what the part number for the AC Power Adapter for Docking Station 575324-002? Also where can I get one from in the Uk please?

A:Ac Power Adapter - Docking Station

Hi, Double post. Please use:     http://h30434.www3.hp.com/t5/Notebook-Hardware-and-Upgrade-Questions/Ac-Power-Docking-Station-575324... Thanks.

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RELEVANCY SCORE 77.6

i am looking for an USB-C docking station for my spectre a360 15.6 inch. is there a solution that somebody knows that works as a docking station for my usb-c connection for 2 monitors, keyboard and power supply for my notebook ? 

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RELEVANCY SCORE 77.6

So my T470p came with a 135w power supply. (Part : ADL135NLC2a). 20v / 6.75A. My Ultradock came with a 90w power supply (Part: 90NL2Ca) 20v / 4.5a. I've been using the T470p in the ultradock for some days without issue..  but: 1. Should I switch to the 135 power supply in the Ultradock? If yes, why if the 90w is working? 2. Can I carry around the 90w power supply instead of the 135w power supply? It's lighter. Just curious.  -or- Maybe I should just shut up and buy another 135w power supply and plug that into the dock and be done with it. But regardless, just curious. Thanks !

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RELEVANCY SCORE 77.6

Can anyone advice me as to what the part number for the AC Power Adapter for Docking Station 575324-002? Also where can I get one from in the Uk please?

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RELEVANCY SCORE 76.8

Season's greetings to everyone. I have an interesting isssue with the power ON to my laptop and its operation via the docking station. It first started about a month ago. The only way the laptop will turn on is when it's attached to the docking station. The actual button on the laptop does not operate, the only way to turn on is via the docking station power button. I made an interesting discovery last night when I disconnected all cables, including the power cable to the docking station, attached the laptop and surprisingly I was able to turn the laptop ON. Again, via the docking station button and not the laptop button. If the laptop is already ON, and I disconnect it from the docking station then I'm able to use it normally. But, should I take a break from using it, and it goes into sleep mode and I try to re-start it, I have no success. The power light flashes slowly and no amount of pushing the button will either turn it ON nor turn it OFF. It almost feels like the button is not completing a circuit. Any help or suggestions would be gratefully appreciated. Thanks to all. I'm running Windows 7 PRO

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RELEVANCY SCORE 76.8

I have a ThinkPad Pro Dock 90W (40A10090WW) and see that there looks like a light in the middle of the power button, but it doesn't light up like the lock and dock icon. Does that little circle suppose to light up or not?

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RELEVANCY SCORE 76.4

Hi,My T470s does not start (after shutdown) and get stuck at Lenovo BIOS screen indefinitely. However, it starts perfectly well when the docking station (Lenovo ThinkPad dock) is attached. I have tried updating the BIOS to version 1.30 (latest), but still the problem remains. I have a dual boot (Windows 10 + Ubuntu 17.10). The problem started after suddenly one day on startup the laptop displayed a simple message saying that the laptop is updating (probably BIOS) and I shouldn't power it off. After a while it started normally, but then didn't start after shutdown. Please let me know how to diagnose and solve this issue. Thanks,Navneet

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RELEVANCY SCORE 76

Laptop is on and plugged into the docking station which is "powered".  Connection to monitor / keyboard and mouse is fine, however I'm surprised to see a lower power - plug is soon message.  Isn't docking station supposed to provide power to the laptop?

A:Super Speed USB 3.0 Docking Station - No power to laptop?

Actually, I believe what makes a docking station a docking station, is because it is a device which actually connects to a docking port. Thus the name docking station.
A usb port is not a docking port.
A docking port is a single port which provides many pins so different protocols such as video, audio, usb, and yes power etc. all have their own connections so they may run at their full potential.
A docking port is not a conversion of many protocols to a usb signal, then trying to cram it two ways across far fewer pins.
And seeing as all 'docking ports' as far as I know, do have power connectors in them, I can see how Dell's calling a port replicator a 'docking station' could confuse somebody.
I don't believe it to be an honest mistake either, just deceitful tactics of the marketing department to take advantage of what people believe to be a docking port so they can make a nickel.

Think of it not as a shipping dock, with full access to power, fuel, water, sewage connections, the whole works.
But rather a boat anchor so you can anchor your ship off shore, then take your time waiting on what ever ship to shore transportation boats you can find to cart a limited amount of resources through a limited method.

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RELEVANCY SCORE 76

I have the Yoga 260 with a OneLink+ Docking Station for over an year and working well. I have 2 monitors connected. One DP and One VGA port. In the last 2 months, I keep getting this message "Docking Station AC Power Problem   AC power is detached from your docking station, or the AC power adapter type is incorrect. Connect a 90-watt AC power adapter or higher to the docking station for proper battery charging and docking station operation." If I shut down the system and leave it connected to the docking stations, it charges up the battery. Battery starts draining when Windows boots up and this message shows up.  I use a 90-watt AC power adapter that came with the docking station. For over a year had no problem with it.  I tried to use a second 60watt AC power adapter power connected directly to the Yoga 260 without the dock and it charges Ok. If I connect the Dock Connector with the second AC power adapter connect, it continues to charge the battery and even after I remove the second AC adapter, it continues to charge through the dock connector. Kind of like Jump starting the system. !!! Please suggest solutions as this is becoming a big hassle and the idea of getting a docking station is lost.    

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RELEVANCY SCORE 76

I'm expecting the answer is no but thought I'd check before ordering. I'm going to replace my T520 with a Y700 and really don't want to buy another docking station if I don't have to. Can I dock my Y700 in the same dock as a T520. Can I reuse my power adapters? Thanks for any advise.

A:Is a T520 docking station/power adapter compatible...

extremely unlikely. If a dock exists for the y700 and the part # is the same. I doubt it on some many fronts its pointless to list. Look up the systems options.




T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Windows 7 Home Prem - 64bit w/8GBZ70-80 I7 - 5500U 16GB GB - 1TB HD Window 8.1 64bit FHD 17.3 inch Display, Nvidia G840 w/2GB memory

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RELEVANCY SCORE 76

I have an HP 90W Docking Station (A7E32UT) that an end user lost the power adapter for. I am trying to determine the model of the power adapter so I can purchase a replacement, but I cannot find this information online.

A:Docking station power adapter replacement needed

@BBK_80 The part number is   693712-001 http://partsurfer.hp.com/search.aspx http://www.ebay.com/sch/i.html?_from=R40&_sacat=0&_nkw=693712-001&_sop=12 REO

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RELEVANCY SCORE 76

During an office move, I lost a power supply for a D3100 docking station / port replicator. I know that I need a 19.5V 65W power supply, however there is several adapters with those specs listed on the website and the compatibility is also only listed for laptops (not to mention some review saying they followed the compatibility lists provided and still ended up with a wrong adapter).I would like some help knowing exactly which product I need to get the replace my lost power supply.

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RELEVANCY SCORE 76

Dear community, I got a new X1 Carbon (2018) and a Lenovo ThinkPad Pro Dock Station with 135 Watt. It also works very well, but after some time, the external monitor (connected via Display Port) as well as power stop working, while mouse and keyboard connected via USB continue working.  What is going on? Thank you for your help! Kind regards!

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RELEVANCY SCORE 75.6

This update caused me:
1) Lagging of mouse cursor and wireless keyboard connected via docking stand DS1000
2) Popping/crackling sound from Dell soundbar AC511 connected via DS1000
3) Random interruptions of Ethernet via DS1000

I tried to update or change related drivers, change DS1000 for another HW without any success.
BIOS DOWNGRADE to previous 1.4.6 FIXED all above.
1.5.2 should be fixed immediately since it contains serious bugs.

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RELEVANCY SCORE 75.2

Just wanted to advise folks that although Lenovo sells this C2G docking station and says it works with the Yoga C940, that's not entirely true.  The docking station will, after first being plugged in, deliver power to the laptop.  That power delivery stops any time that A/C power is disconnected and then reconnected, or when the laptop reboots, and/or the laptop enters a low power state where it does not require the same power delivery (e.g. hibernation) and then resumes normal operation.  C2G technical support has no explanation for this, nor does Lenovo Premium tech support. 

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RELEVANCY SCORE 75.2

Hello I've went through fomrum and internet and I couldn't find a solution for my problem. I have Thinpkad T480s and Thinpad Ultra Docking Station (135W). I can't get latpop charing battery when attached to docking station. When power up/attache to dock I receive following error from Lenovo Hardware Settings:"Docking Station AC Power Problem: AC power is detached from your docking station. For proper battery charging and docking station operation, connect the AC Adapter for the docking station" So that is not possible since the docking station requires power to operate.  I do not know where to go with that - it looks like firmware error in docking station of some driver error in laptop. I've verified BIOS in the laptop and its newest possible. The same goes for docking station firmware.There is no airplane mode enabled. Any syggestions?Thanks in advance.

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RELEVANCY SCORE 75.2

Hi, I've got a few clients with new Lenovo E-480s and USBC docking station that are having a lot of problems.  Wifi, monitor issues, general performance quality, etc.  After trying bios updates and new drivers I'm still having problems.  I thought to look at the power supplies and have a new question. Docking stations are dk1522.  Power brick for those are model ADLX45NDC2APower brick for laptop is model ADLX65YLC2AThe brick that comes with the laptop is a 65 watt brick.   20v at 3.25aThe brick that comes with the docking station is a 45 watt brick 20v at 2.25a I suspect insufficient wattage is my problem.  Can someone confirm compatibility?  Thank you

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RELEVANCY SCORE 75.2

Unqiue situation here. Never thought upgrading my dual office monitors would result in so much grief! Office PC is a 3rd gen X1 Carbon Thinkpad. New monitors are the Dell P2319H.  After failing to both displays connected to an old Lenovo docking station they assumed that upgrading the docking station to the newer USB Gen 2 docking station would do the trick. But here's the problem, the dock's only connection to the laptop is USB-C. Which does not exist on this old Thinkpad laptop. I had a USB-C to USB-A cable on me and gave it a go. It powers the docks and all the accessories but of course not the 2 additional displays.  If I look up "recommended/compatible" docks for this laptop obviously this one is not listed. The new monitors only support HDMI, Displayport and VGA.  Any idea if this logic would work, USB-C to Mini Displayport cable (both male ends)? In my head it makes sense, but not sure if a single Mini Displayport port is capable of power 2 of these 1080p monitors. Otherwise my last option is to try something another dock.

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RELEVANCY SCORE 75.2

Hi,
I still have an old PR03X docking Station, will this work with the Precision 7520?
What about the new Thunderbolt Docks - I read somewhere that I would still need  to plug in an additional power supply for the Precision models since they use so much power (180W) even when they are connected to the Dock??
If that is true, can't I simply buy some generic USB-C Docking Station, i.e. what does the Precision Laptop do in regards to power supply from USB when I have already the regular power supply plugged in? Hopefully nothing in regard to charging from USB-C? Or how does that work?

Thx!

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RELEVANCY SCORE 75.2

I get an Docking Station AC Power Problem fairly frequently.  This happens when I'm not plugged in.  I have a docking station, but I'm not using it right now (on vacation), and have rebooted multiple times and it still happens.  I don't know if this is related to the problem I also have been having, where it doesn't reliably go to sleep (or stay asleep).  Any idea what could cause this when I'm not even plugged in, let alone in a docking station?  Thanks 

A:spurious Docking Station AC Power Problem (P50) when running on battery

By frequently, I mean this can happen every few minutes

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