Logitech Optical Wheel Enterprise Edition mouse

Long-lived productivity
A state-of-the-art optical sensor provide the smoothest tracking on almost any surface. Since they have no moving parts, optical mice require less maintenance than and outlast ball-based mice.

Comfort and convenience
For convenience, this mouse plugs into either a PS/2 or USB port. The contoured shape provides comfort and the scroll wheel increases productivity with fast navigation of documents and web sites.

Features
Optical technology - no mouse pad needed
No ball - never needs cleaning
Combo USB and PS/2 works on either port for more flexibility
Ambidextrous shape makes the mouse perfect for right and left handed users
Innovative scroll wheel provides convenient scrolling without clicking in the scrollbars, also acts as a 3rd button

Logitech Optical Wheel Mouse Enterprise Edition, Optical