Acer Aspire M3-581T - USB Failure

Troubleshooting 4-13
USB Failure 0
If the USB fails, perform the following, one at a time. Do not replace a non-defective FRU:
Figure 4-8. USB Failure.
Can not support USB3.0
Start
No
Check USB board to
MB cable
Re-assemble USB
board cable to M B
NoCheck USB board?
Swap USB board
and USB cable
Replace M/B