... 3.Compatible with HTPC, IPTV, google TV FeaturesSystem Requirement:wireless virtual laser keyboardWindows 2000, XP, Vista, CE and 7 Linux ... DSSS band Maximum operating distance: 30m Latest developed 2.4G wireless, ultra-mini With receiver and middle touchpad and blacklit Includes ... LED lights backlight to help when using in dark environments Wireless 2.4G radio frequency with USB receiver World first ...