I assume you mean either a USB hard drive or a USB thumb drive.
Assuming it's a USB hard drive, you would have to crack open the case and install the hard drive into a computer by normal means (hook up the SATA data and SATA power cables).
The above assumes it's not the hard drive but the electronics in the case that are the problem. If it's the hard drive you're out of luck.
Obviously ruining the case voids the Warranty.
*If you have more information I'd be glad to help further.