CX0209B Features With USB port， it supports the plug-and-play function Equipped with 4 hotkeys that can open 3 procedures Combines mouse and keyboard functions Compatible with many operating systems including Windows 2000 and above/XP/MCE/Vista Compatible with most media player software Compatible with many popular network TV software including PPlive， FastTV， PPS and STTV General Specs Color Black Receive Interface USB 1.1 Receive Cable Length 80 cm Wireless Technology Infrared remote Operation Range 18 meters at least Power Source 1 x CR2025 battery Compatibility Windows XP/MCE/Vista