Whether you're left or right handed, when you're working on your computer day and night, you want more flexibility and comfort. That's what you'll get with the Trackman&reg
Marble&reg
mouse. The stays-put trackball design keeps your hand comfortable and supported all day. The button controls let you move forward and backward with ease, and you&rsquo
ll enjoy fast, accurate cursor movement with just a move of your finger. Plus, the patented Marble&reg
optical technology gives you smooth tracking on almost any surface. Connector/Port/Interface: PS/2
USB
Left/Right Hand Use: Left/Right
Mouse Technology: Optical
Wired/Wireless: Wired.
Unit of Measure : Each