Genuine Dell UN733 Wireless Bluetooth Optical Mouse With Scroll Wheel (Dongle Receiver Not Included), Can Be Used With Any System That Has A Bluetooth Receiver, or Supports Bluetooth Technology, Compatible Part Numbers: DH421, G480K, DH956 Bluetooth Wireless Optical (1000dpi) Scroll and Tilt Wheel 7 Programable Buttons, Color: Black & Silver Universal with Bluetooth, Compatible Dell Part Numbers: UN733, DH421, G480K, DH956