On motherboards which have upward facing 19PIN USB header connectors, it is common for the cable to conflict with the top panel. We have done our best to minimize this by selecting a low profile connector that complies with the USB3.0 standard, but as the FC5 is only 55mm high (internally) the cable does still interfere with the top panel. The cable itself is flexible and users should be able to overcome the problem by bending the cable.
An alternative workaround is to purchase a 90-degree adapter that will change the orientation of the cable. Note that you will need to select the correct orientation depending on the design of the motherboard