Dual USB 3.0 Back Panel Adapter Cable – 20 Pin Motherboard Header to 2 x USB-A PCI Bracket (0.5m) Expand your desktop PC connectivity with this dual USB 3.0 back panel adapter cable. Designed to convert a 20-pin motherboard header into two external USB-A ports via a PCI bracket, this adapter provides a simple and efficient way to add rear USB connectivity. Ideal for everyday use, this cable allows easy access to USB devices such as flash drives, external hard drives, keyboards, and other peripherals directly from the back of your PC. Supporting high-speed USB 3.