5 Replies Latest reply: May 21, 2012 12:05 PM by X423424X
maviren Level 1 (0 points)

Sound from the USB ports on my Mac Pro (Early 2009) fail after a couple of seconds.  Sound can still be heard from the Internal Speakers.  I have replaced the USB speakers with several types and brands.  Problem remains.  I can get sound for several second then it quits and can not be restarted.

Mac Pro, Mac OS X (10.7.4)