AMD 1090T X6 Phenom II BE
2x2Gb Crucial Ballistix Tracer DDR3-1600
Swiftech H20-320 Edge
128Gb Crucial C300 RealSSD
1Tb WD Caviar Black
LG 8x BD-RE 16x DVD-RW
ASUS EAH5870 V2 1G
OCZ Fatal1ty 750w
Cooler Master HAF 932 AMD Edition
For testing I'm using USB cables with two different lengths of connectors. Either of the above works fine in any of the three ports on the left side of the device, however only the shorter one will allow the door to close when placed in the far right port. Both cables fit through the slot on the bottom of the door, but they are definitely tight and you can feel the door dragging along the cable jacket as it's closing. In this example I'm using a mouse and a camera cable, which are probably on the thin side compared to some other USB cables like keyboards and headsets. Given the small amount of gap below the door and the tightness of the cables as tested above there is little chance that a much thicker cable would work.
Let's wrap things up with some final thoughts and conclusion.