CG0198B Features Standard USB 3.0 interface, compatible with USB 2.0 Equipped with 4 high-speed ports Transmission rate of up to 5Gbps Equipped with an LED indicator for every port Built-in fuse to protect your devices General Specs Connector Type USB 3.0 (compatible with USB 2.0) Port Number 4 Transmission Rate USB 3.0: 5Gbps, USB 2.0: 480Mbps Power Supply DC 5V Supports System Windows 2000/ XP / Vista /7, Linux, Mac 10.0 or above LED Blue