Dell KM555 Keyboard & Mouse - English (US) - USB Type A Plunger Wireless Bluetooth/RF 5.1 2.40 GHz Keyboard - Keyboard/Keypad Color: Black - USB Type A Wireless Bluetooth/RF Mouse - Optical - 4020 dpi - Scroll Wheel - Pointing Device Color: Black - Volume Up, Volume Down, Mute, Play/Pause, Forward, Back, CoPilot, Multimedia Hot Key(s) - Symmetrical - AAA, AA - Compatible with PC, Mac