Verbatim 96675 Wireless Desktop Laser Mouse Wireless - Plug in receiver and go wireless. 2.4Ghz reliability and performance. Laser - Precision movement and control with laser sensor tracking. Comfort Grip - Smooth, textured grip. Designed for comfort and control. Multi-Button - Enjoy one-click access to key functions with 3 programmable buttons System Requirements: USB 2.0 (Also compatible with USB 1.1 ports) Windows XP, 2000, Vista Mac OS 10.4.X and higher