3M Ergonomic Mouse 得吾得?

Innovative vertical design keeps the arm in a comfortable, more neutral and natural "handshake" position
Uses larger muscles to move mouse, reducing risk of discomfort
Left and right click functions using the thumb button on the top of the vertical grip
3rd button on handle can enable scrolling in some applications
Available in two sizes: small/medium and large
Easy installation
USB connector with PS/2 adapter
Compatible with PC, Macintosh, and iMac computers with USB ports
Includes a two year warranty and a 30-day money-back guarantee
Unlike the traditional palm-down posture of most input devices, the "handshake" design of the 3M™ Ergonomic Mouse has been clinically proven to reduce the muscle strain and discomfort associated with carpal tunnel syndrome and repetitive stress injury. Users can choose the size of the mouse most appropriate for their hand and can work both easily and comfortably for hours.

System Compatibility
Operates using Windows 95, 98, 2000, XP and NT 4.0
Works with the new G4 Apple Power Macintosh Computer with USB port. Plug and play only. No software support.
Works with iMac and eBook computers and compatible with USB support
Operates using Apple O/S 8.1 or higher with USB upgrades. Plug and play only. No software support.