If only one USB device is not working, try plugging in another USB device to see if it is recognized. If other devices work, the issue may be with the original USB device rather than the port itself.

We previously reported extensively on an issue where the iPod Shuffle and potentially other flash drives, are only recognized on certain USB ports -- particularly when connected to Mac mini systems.

So you’ve connected a device to your PC via a USB port — but Windows doesn’t recognize it. What now? Before you assume the product (or your PC port) is broken, there are several USB troubleshooting ...