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the ebay images are blurry, can you take a picture (upload to ibbco/imgur/etc.) and show us?
I'm thinking its the usb2.0 cable, so you could just get something like
Akasa Internal USB Extension Cable 40CM Female To Male Header
There should be a USB header on the motherboard, possibly several, close to the USB3.0 header. They might be labelled F_USB_1 or something similar. Any one should work.
You might need to reroute that cable more directly to get it to reach.
Worst case you can get an extension like this - [link]
Straight end to end cable then?