Interlink VP6341 Wireless Media Keyboard and Mouse * 2.4GHz long range radio frequency * Plug & play for easy use with no setup * Keyboard recharges with USB port * 8 media hotkeys * Built-in trackball * Integrated mouse buttons and scroll wheel * Keyboard features 100" transmission range * Professional-grade presentation remote features 150" transmission range * Keyboard and remote share one receiver dongle * AutoRF scan and channel-hopping technology eliminates potential interference * System Requirements: Microsoft Windows 7, Vista or XP; 2 x USB ports (1 for receiver dongle, 1 for charging keyboard)