The USB port on your motherboard can be hot plugged and is also capable of providing direct power to components that are connected to it. If you find that the USB ports on your motherboard are no longer functioning as they used to, then there are a number of reasons why this might be occurring such as:
You might find that the drivers for your USB port have become corrupted it. In order to find out whether this is the case, follow these simple instructions:
Right Click on My Computer (on your desktop)
Then Click on the ‘Hardware’ Tab
Once your there click on the ‘Device Manager’ Button
Now check under Universal Serial Bus Controllers (USB) for any yellow exclamation marks. Exclamation marks that you may find are due to a driver issue. In order to fix this problem, you’ll have to reinstall the drivers for your USB port. To reinstall the drivers for the device, I suggest you download and install the latest drivers for your motherboard. The drivers for your USB device will be a part of the drivers.
Another problem that you might be having is that the device that you’ve connected into the port is not compatible with it. This is usually due to voltage issues. If you ever encounter such problems, then it’s recommend that you connect your device to an external power source.
The USB port at the back works, but the one at the front does not. This is usually due to the extension line that links the front USB ports to the motherboard. The ports at the back are integrated into the motherboard so they have less pressure on them. In order to fix this problem, you might want to consider buying separate power equipment like a USB hub for it.