Kensington Expert Mouse - Wired USB or PS/2

Product Overview

Kensington Expert Mouse® Trackball. Large ball for precise fingertip control.  Four easy access buttons.  Scroll Ring® around ball for fast scrolling. Wrist rest. Striking black/silver design with black case and black ball. This classic trackball design has won virtually every award there is to win.   Hundreds of  thousands sold and still in use. All new updated electronics with new DiamondEye™ direct optical tracking. A great desktop trackball for your home or office. Installs using PS/2 or USB interface port. Black case, Dark gray ball.

Product Specifications

Trackball Size: 55mm
Trackball Color: Dark Gray
Trackball Encoding: Optical
Case Color: Black
Hand Orientation: Ambidextrous
Buttons: 4 (programmable)
Scrolling Hardware: Scroll Ring around ball
Interface Included: Native USB / Includes a USB to PS/2 Adapter
Software Included: Yes. Kensington Mouse Works.
Dimentions: 5.75"(L) * 5"(W) * 2.5"(H) (at crest of trackball) in.
Manufacturer's Warranty: 5 Years