The Dell KM5221W keyboard and mouse set provides a reliable, wireless connection and is ideal for every workspace. Highlights: - Wireless connection, USB-A Nano receiver guarantees a fast and stable connection. - Low-profile splashproof keys with a pleasant keystroke. - Optical sensor makes the mouse extremely precise. - Ergonomic design is perfect for comfortable use. - Compatible with Windows and Chrome OS and can hence be used with a majority of systems.