unrecognized USB

The difference is "very important" as the keyboard and mouse PS / 2 is also managed by the SIO chip USB ports because "chipset South" by managing.

Under this scheme, we found it no different than keyboard and mouse should be damaged and treatment is quite similar to keyboard and mouse.


1. 5V power outage (cut off the fuse or circuit)

2. The leak noise filter capacitor (let go)


3. The way data is interrupted. <- br="" circuit="" detection="" find="" it.="" to="">

4. Openings or errors chipset South (be careful)

The only difference is that the most important "chipset South" above management.