updated 04:05 pm EDT, Tue August 10, 2010
Inexpensive option as backup mouse
MacNN has reviewed the Engage Wired Optical Mouse, a low-cost mouse for Macs and PCs sold by OfficeMax. Ergonomics are said to be strong on the medium-sized controller, even for small and large hands. While sensitivity is estimated to be only 400dpi, the device does have a scrollwheel between the left and right buttons. Three other buttons - one behind the scrollwheel and two on the side -- can be used in Windows, but not on a Mac.
This stems from a lack of specialized drivers for either Windows 7 or Mac OS X, ultimately limiting the useful scope of the hardware. The mouse may also display some jumping or stuttering when held in certain positions.
For as little as $17 the mouse may be worth its price as backup or secondary input, but driver and control problems will likely prevent a full recommendation. A wireless version, with a USB transmitter, is available for $20.