HP CS500 Wireless Keyboard and Mouse Combo (Model CS500 Wireless Keyboard and Mouse Combo) Product Highlights: • Connectivity: Wireless via a single USB receiver (2.4 GHz) serving both devices with Plug & Play connectivity. • Keyboard: Features 104 keys with a quiet and comfortable design to reduce noise and friction while typing. • Mouse: Ergonomic design for office and home use with sensitivity up to 1600 DPI.