on board usb ports

I have an ASUS P5B Plus motherboard with 4 USB ports on board and two on the front case. I am having an issue with 2 of the 4 on board USB ports in the back. If I have a mouse plugged in and the computer is off. If I tap the mouse or unplug the mouse and plug it back in the computer turns on. This only happens with 2 of the 4 in the back. Is it a short? Any suggestions would be great. Looked in the bios for some kind of hint of a function to turn something like this on or off and didnt see anything. thanks

Eric

 

Are you sure you don't have your computer in Sleep mode and it's just waking up when you move your mouse?

If your computer is actually starting from a full shutdown when this happens, it sounds like you may have a defective motherboard, at least as far as those two USB ports are concerned. If this is the case and your motherboard is otherwise functioning normal, a PCI USB card such as SYBA PCI USB 2.0 4+1 port controller card Model SD-V2-5U - Retail would be a solution.

 

turns out it actually a feature, thanks for your help though
http://support.asus.com/faq/faq.aspx?model=P5B-Plus&SLanguage=en-us

 

So, is it something enabled/disabled in the BIOS?

 

beats me I cant find anything in the bios to turn it off. it just works you plug either a keyboard or mouse into the usb port near the network port and they will power back on the system if you click on the mouse or keyboard

 

Well, in your original post, you gave the impression this was a recent issue. Can clarify this point? And, did you find specific reference on ASUS website stating this is normal?

 

http://support.asus.com/faq/faq.aspx?model=P5B-Plus&SLanguage=en-us

it is a new issue its a new motherboard go to above link thanks

 

Yes, I scanned the three pages of FAQ at the link you provided but did not see the answer there. That's why I was probing you for a specific reference for your statement that your computer's behavior is normal, but I guess you can't or won't provide it.

 

oh sorry my bad i thought that link brought u directly to the article. Its on page two the very last one on page to that says power on by USB. thanks

 

http://i215.photobucket.com/albums/cc300/shanemail/asus1.jpg
http://i215.photobucket.com/albums/cc300/shanemail/asus2.jpg

 

Excellent! :cool

BTW, here's a direct link to Power on via USB