Backup won't work for a usb 3.0 that is suppose to be compatible with a 2.0 usb

I have a bunker hill system 68332 that won't recognize my back up device which is an external hard drive not just a flash but it says it is a 3.0 that is compatible as a 2.0 usb. Trying to use it for a system backup. Any ideas?
Asked Oct 04, 2013

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