iPod Shuffle USB connectivity issues (#4)

We continue to receive reports from users whose iPod Shuffles are only recognized by certain USB ports (accept power from and allow synchronization through), or are otherwise flaky with regard to connectivity. The problem is apparent on a broad range of Mac models.

Some readers have reported that simply re-inserting, or gently nudging the iPod Shuffle results in its recognition on initially problematic USB ports.

One reader writes:

"Still about iPod shuffle connectivity, I tried successfully and very gently tapping with my forefinger on the iPod and it works. Also try to adjust the iPod shuffle, also very gently, to the port moving it sideways until it connects."

MacFixIt reader Steve Burg notes that users can check if their USB ports are delivering enough power using Apple's System Profiler (located in Applications/Utilities).

Steve writes:

"Many devices require a certain amount of current to operate correctly and some USB ports, most notably the keyboard ports, would never have enough current. The same problem occurs when too many devices are plugged into the same port. External hubs that provide their own power usually fixes this problem. A quick way to check is to go to System Profiler and check the USB ports. This will show the current available for each port. It should be at least 500MA."

Previous coverage of this issue:

• iPod Shuffle only working on certain USB ports
• iPod Shuffle: Only recognized when connected to specific USB port

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