Negative Positive
Title: Great value, works well.
Review: Nice piece of hardware.2 modes of operation:Mouse mode: when on flat surface, trackball acts like scroll wheel and standard 2 mouse buttons.Presenter mode: Laser pointer enabled, 2 extra mouse buttons are available under mouse.Works fine on XP, although administrator access is needed to get the extra 2 buttons under the mouse recognized. Also works on Linux (Ubuntu) in both mouse and presentation mode, but I haven't gotten into XF86Config or whatever it's called now to get the extra buttons enabled.Also, it's a little narrower than most desktop mice so it fits my hand better.Limiting to 4 stars because I've only been using it for one week.
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