Overview The U321-18N-20P-PM USB 3.0 2-Port Panel Mount Adapter adds two USB 3.0 ports to your computer. Consistent with current industry standards, this 18-inch cable attaches to your PCs motherboard with a 20-pin IDC plug. The cables USB-A ports support USB 3.0 data transfer speeds up to 5 Gbpsperfect for sharing video, music, images and other large files. The dual USB-A ports attach to the computers front panel using the included screws. Gold-plated connectors resist corrosion and ensure optimal signal transfer. Molded construction with strain relief guarantees durability and long life. Flexible PVC jacket makes the blue cable easy to install in tight spaces. Backward compatible with previous USB generations.