Dual-purpose DIY solution - front or back
The USB 3.1 Front Panel provides you multiple use way, just unscrew the box then you will have a DIY expansion card, slot your card in simple steps:
1Open USB 3.1 Front Panel and remove the printed-circuit board (PCB) from the housing.
2Attach the supplied bracket to the removed PCB, transforming it into an expansion card.
3Slide the expansion card into a spare slot and your PC now has two USB 3.1 Type-A ports at the back panel!