Technologies 2.4 GHz Mouse, Black/Gray (CST3645A)

I really like the vertical feel of this mouse, BUT the DPI button does not work as advertised even after downloading the software from the manufacturer. So the speed that I like in a mouse is not configurable on the fly as I had hoped but only through the typical Windows interface. Nice mouse; driver needs a tiny bit more work. Will hope for upgrade(s) in future.

ack!