Multimedia desk set with wireless keyboard, wireless multimedia mouse and USB receiver Ideal set for controlling Windows Media Center Edition and Media Player applications Keyboard with scroll wheel, 19 multimedia buttons, volume control wheel and 4 additional Media Center Edition buttons 9 button mouse with play/pause, stop, previous/next track buttons to control Windows Media Player and Media Center functions Fully compatible with Windows Media Player in Windows Vista, XP MCE and XP without the need to install a driver