Trust Optical USB Micro Mouse MI-2600Mp (Micro Mouse USB). Device interface: USB, Movement detection technology: Optical. Minimum processor: Intel Pentium, Minimum RAM: 16 MB. Mouse dimensions (WxDxH): 33 x 83 x 34 mm, Mouse weight: 60 g. Package weight: 130 g. Compatibility: Intelli Mouse compatible, Compatible operating systems: Microsoft Windows 98/ME/2000 of XP