Tcatman
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XPS 8910, Rear USB 2.0 ports not working?

I have an XPS 8910 out of warranty.  Both USB 2.0 ports for KB and mouse stop working.  Now one 3.0 port has stopped.  Soon won't have any ports for mouse and KB at all.  With KB in a 2.0 port, cannot get into BIOS.  KB and mouse just makes a blink at start up and then no light.  BIOS is 1.1.5, Windows 10 just updated today, no help. In device manager, no yellow tags on any USB controller.  Bios has all ports enabled. Bios diagnostics OK.

Is mother board done ?

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37 Replies
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Re: XPS 8910, Rear USB 2.0 ports not working?

There was a thread about this problem several months ago. As I recall only the USB 2.0 ports were a problem, the USB 3.0 ports continued to work. Also as I recall, some motherboards were changed but the problem continued. One possible solution was to connect the keyboard and mouse via a powered USB hub to the USB 2.0 port.

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Tcatman
1 Copper

Re: XPS 8910, Rear USB 2.0 ports not working?

I am going to try and find a powered USB hub tonight to see if I can salvage this box.  I think there must be a transistor to turn the 5V on and off the port for power saving and it is probably burned open from not being able to handle the current to run the mouse and keyboard.  I may one day try to jumper power on to the port one day.  At any rate, I am very disappointed in the quality of this motherboard since it did not last 2 years.  No more Dell for me.

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8 Krypton

Re: XPS 8910, Rear USB 2.0 ports not working?

My keyboard failed to work on the USB 2.0 port of my XPS 8910 about a week ago. I still have about a week on the warranty but I  don't think I want to go through the trouble of replacing the motherboard if this is going to happen again. The keyboard is working fine off the USB hub. My wireless mouse was always on the hub so it was only the keyboard that was a problem.

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8 Krypton

Re: XPS 8910, Rear USB 2.0 ports not working?


@Tcatmanwrote:

1.I think there must be a transistor to turn the 5V on and off the port for power saving and it is probably burned open from not being able to handle the current to run the mouse and keyboard. 

2. I may one day try to jumper power on to the port one day.  At any rate, I am very disappointed in the quality of this motherboard since it did not last 2 years.  No more Dell for me.


1. Yes, it's in the spec for USB-2.0 to limit to 0.5-amp and Windows will (should) tell you if over-amping . USB 3.0 can handle a bit more.

2. Yeah, boards die. Especially these new laptops that are built like phones inside. Lost one in a $2000 Lenovo X1-Carbon a while back.

Yes, a few times over the years, I've run good on motherboards with partial circuits blown. 

My (new) Renesas USB-3.0 card will be in soon. I'll post progress.

https://www.dell.com/community/Vostro/Vostro-460-XPS-8300-Upgrade-Adventures/td-p/6054983/page/2


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8 Krypton

Re: XPS 8910, Rear USB 2.0 ports not working?


@Vic384wrote:

My keyboard failed to work on the USB 2.0 port of my XPS 8910 about a week ago. I still have about a week on the warranty but I  don't think I want to go through the trouble of replacing the motherboard if this is going to happen again. The keyboard is working fine off the USB hub. My wireless mouse was always on the hub so it was only the keyboard that was a problem.


I would use the warranty. Yes, a pain but use the warranty that you paid for. The whole MB might blow-up in a month because of this USB circuit defect. 


Registered Microsoft Partner and Apple Developer
- Like many of you, I can appreciate a good game-engine.
- I answer questions here, but I'm not a Dell employee.
- Consider giving posts you like a "thumbs-up"
- Posting models-numbers and software versions speeds trouble-shooting.
- Click "Accept as Solution" button on any post that answers your question best.
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8 Krypton

Re: XPS 8910, Rear USB 2.0 ports not working?


@Tesla1856wrote:


I would use the warranty. Yes, a pain but use the warranty that you paid for. The whole MB might blow-up in a month because of this USB circuit defect. 


The Dell warranty will expire but I brought my XPS 8910 from Costco and they extend the warranty an additional year. If Dell will send me a new motherboard and if I don't have to send the old one back then I will take them up on the offer. :Smile:

 

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8 Krypton

Re: XPS 8910, Rear USB 2.0 ports not working?


@Vic384wrote:

@Tesla1856wrote:


I would use the warranty. Yes, a pain but use the warranty that you paid for. The whole MB might blow-up in a month because of this USB circuit defect. 


The Dell warranty will expire but I brought my XPS 8910 from Costco and they extend the warranty an additional year. If Dell will send me a new motherboard and if I don't have to send the old one back then I will take them up on the offer. :Smile:

 


Fat chance, but they probably will send you a pre-paid return label with the new board...

Dell captured a couple of these 8910 systems with failed USB2 and reported that wiping the HDD and doing a clean OS install fixed the problem, but some users who tried this said it didn't work for them... YRMV. :Wink:

Ron

   Forum Member since 2004
   I am not a Dell employee

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Re: XPS 8910, Rear USB 2.0 ports not working?


@RoHewrote:

Dell captured a couple of these 8910 systems with failed USB2 and reported that wiping the HDD and doing a clean OS install fixed the problem, but some users who tried this said it didn't work for them... YRMV. :Wink:


I don't see how that would fix the problem, because the only thing I had to do to fix the problem is connect the keyboard to my USB hub which was already connected one of the USB 2.0 ports.

 

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8 Krypton

Re: XPS 8910, Rear USB 2.0 ports not working?


@Vic384wrote:


I don't see how that would fix the problem, because the only thing I had to do to fix the problem is connect the keyboard to my USB hub which was already connected one of the USB 2.0 ports.

 


I can only tell you what my Dell tech contact told me after their investigation into this specific problem. And like I said, some users who followed that lead said it didn't work for them.

AFWIW, some users also said that connecting a USB2 hub to a rear USB2 port didn't fix the problem for them. So "one size" doesn't fit all. :Surprise:

And it's odd that a lot of users suddenly all experienced the problem around the same time, which might suggest a software update had something to do with it. Otherwise, you'd have to speculate that some bit of motherboard hardware was designed to self-destruct around the same date.

Consider yourself lucky the USB2 hub solves the problem for you.  :Wink:

Ron

   Forum Member since 2004
   I am not a Dell employee

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