Rosewill 5 Buttons, Wheel USB RF Wireless Optical Mouse, for Right Hand, up to 1600DPI (RM-7800PK) Plug & Play Interface: USB Hand Orientation: Right Hand Tracking Method: Optical Buttons: 5 Scrolling Capability: 1 x Wheel Maximum DPI: 1600 DPI Adjustable DPI 800/1200/1600DPI