High Speed USB 2.0 480 Mbps - 4 Ports - USB Hub in Black (Black) USB hub with 4-port, Fully compatible with the Universal Serial Bus Specification version1.1/2.0, Supports 480Mbits full speed Perfect for connecting USB 1.1 or 2.0 peripherals Plug & Play and hot swapping support Support OS: Win95/98/2000/ME/XP/7/8 End to end Length: 22-inch NOTE: This is not a USB device charger