Bring out the extra USB ports on your motherboard or CPU card.
This model is designed for 8-pin USB headers where the position of the pins is reversed for the two ports. NOT for use with 10-pin headers, as the pinouts for the second port will not line up. An advantage of this layout is that the connector is reversible with no harm done.
Mounts easily in any unused expansion slot to provide two rear-access USB ports.
Individual USB sockets can also be mounted in any available DB-9 cut-out on your chassis using the two screws which hold them onto the backplate - all you need is a screwdriver.