CY U3-103 combo two USB 3.0 male to USB 3.0 Female Extension Cable 50cm with screw Panel Mount holes New generic two USB 3.0 A Male to A Female Cable . panel mount type. Backwards compatible with USB 2.0 1.1 1.0 Offers a throughput of up to 4.8Gbps when used with a USB 3.0 host and device,an astounding 10x the capability of USB 2.0 (480Mbps). Length about: 50cm Package include:1 X New USB technology Standard USB 3.0 A male to A Female Cable 50cm