Description: USB tethering 2.0 chip,high-speed chip. Hi-speed USB2.0 interface, the maximum rate of up to 480Mbps, compatible with USB 1.1/1.0 standard Plug and play,easy to use,easy to carry Current protection function, support overload voltage and transient current protection, safe and convenient System requirements:Windows 95/98/2000/2003 / ME / XP / Vista or Mac OS 8.1 above (Windows 95/98 system to be installed under the driver) Specification: Size:Approx 9.5*3.5CM and wire length 45CM voltage: 5V Current: 500mA Package Includes: 1 x 4 Port 2.0 USB Hub