Fully compliant with Universal Serial Bus 3.1 (Gen 1) Specification. Backwards Compatible with USB 3.0, 2.0 and 1.1 devices USB 3.1 (Gen 1) transfer rates maximum up to 5.0Gbps, (Full-speed12Mbps/ High-speed 480Mbps/ Super-speed 5.0Gbps). 4 ports with current overload detection and protection function.. CLiPtec RZH-621 TYPE-C USB3.1 1+3 ports Hub is offering 1 port of USB3.1 and 3 ports of USB2.0 and backwards compatible with both USB 1.1 and 2.0 specifications. USB 3.1 (Gen 1) is the latest generation technology with (Super Speed), where speeds reach up to 10x faster than High-Speed USB (USB2.0), it delivers ultra-fast USB 3.1 (Gen 1) data transfer rates of up to 5Gbps.