cancel
Showing results for 
Search instead for 
Did you mean: 
robertc4
New member
5 3 0 0
Message 1 of 6
403
Flag Post

Replacing front I/O on HP Z840

HP Recommended
Z840
Microsoft Windows 7 (64-bit)

The front USB drives don't seem to be working anymore. I get a "Power surge on Hub Port" and none of the drives work. If I need to replace the I/O board there, how do I find the P/N and how difficult is it to install? Do I need to take out the hard drives to get over to where I need to replace the board?

Thanks,

Robert

5 REPLIES 5
DGroves
Level 11
4,494 4,477 409 938
Message 2 of 6
Flag Post
HP Recommended

 "Power surge on Hub Port" message means that a connected device or devices is drawing current over the specified limit of the USB Hub. remove all connected USB devices and try them one by one to insure none of them is damaged or shorted.

 

if all work by themselves, you will need to split the devices between the front and back usb ports or buy a POWERED USB Hub and connect this hub to the z840, and then connect the usb devices to the powered hub

0 Kudos
robertc4
Author
New member
5 3 0 0
Message 3 of 6
Flag Post
HP Recommended

I don't have any devices plugged into the front I/O. All the devices are plugged into the back, whcih works fine. None of the ports work. Seems like it shorted out or something, is that possible? Would I stiull be getting the 'power surge on Hub' error message?

0 Kudos
DGroves
Level 11
4,494 4,477 409 938
Message 4 of 6
Flag Post
HP Recommended

sigh,...if using back I/O simply replace all references to front with rear,....the rest of the previous post remains the same

0 Kudos
robertc4
Author
New member
5 3 0 0
Message 5 of 6
Flag Post
HP Recommended

Sorry, my last post may have unclear. The front USB ports do not work at all. The back ports all work fine. I think I may have to replace the front I/O USB board.

0 Kudos
DGroves
Level 11
4,494 4,477 409 938
Message 6 of 6
Flag Post
HP Recommended

the front I/O panel is not two expensive used (if you can find one) the problem is this may not fix the problem and if not the issue is motherboard related

 

i would carefully inspect the front usb ports and see if any pins in the socket(s) are bent for usb 3.0 (blue color) there are 6 pins

 

for usb 2.0 white/black there are only 4 pins

0 Kudos
Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation