USB. Funky in tower. Gone in display.
Greetings. The USB slots in my tower have become very intermittent and are no longer functioning in my cinema display. I have tried zapping PRAM, to no avail. Thoughts? Cheers. - Frank
The display just contains a Hub that Hubs the USB bus from the tower -- so this is one problem, and it's in the tower.
But the USBs in the rear are separate from the ones in the front, so one way to debug is to move front to back.
Also, some cables are really flimsy -- be sure you have tried a different cable before condemning the USB ports.