Amazon.com: Kingwin USB 3.0 Dual Port PCI Bracket Cable with Built-In-20-Pin Header, Up to 5 Gbps for Maximum Transfer Speed, Extend Your USB 3.0 Port On Motherboard to Back of Your Computer
StarTech 2-Port USB 3.0 A Female Slot Plate Adapter USB3SPLATE
IOGEAR - GUH304P - met(AL) P4P Hub, 4-Port USB 3.0 Powered Hub with Aluminum Chassis