Verbatim Mini Mobile USB Travel Mouse Pack Size: 1 pack Minimum Bulk Purchase: 10 x 1 pack (10 total) Handy retractable cable- great space saver Ergonomic model- suitable for right and left-handed users 800dpi optical resolution Utilises optical orientation technology for high accuracy and reliability USB, PS/2 and combo interface option Convenient scroll wheel for easy navigation Plug and play- no driver needed Compatible with Windows 98/98SE/ME/2000/NT/XP Package includes- Mini 3D Optical Mouse, User Manual