7 Replies Latest reply: Feb 12, 2013 6:11 AM by guitrein
Poohtergeist Level 1 Level 1 (0 points)

My USBs ports are charging all devices like my iPod and my back-up external Hard Drive but the Mac does not recognise any of them.

 

The Hardware Test showed the following error: 4SNS/1/40000000:Th 1H-81.000.

 

What does this mean?

 

Thanks!


MacBook Pro (13-inch Mid 2009), Mac OS X (10.6.8)