Buy Kensington Expert Mouse Optical Trackball Mice & Cursor Control Devices 64325 today at PC Connection

The best trackball ever made has just gotten better. The new Expert Mouse employs Kensington's Diamond Eye optical technology for smooth, precise cursor movement. Surrounding the ball, a brand new implementation of Kensington's award winning Scroll Ring puts scrolling right at your fingertips.
More comfortable than ever, the Expert Mouse even comes with a new, soft, detachable wrist rest that cradles your hand. You get all of these great new features along with the same, large ball, exceptional control, and ease-of-use that has set the industry standard for more than 15 years. An attached 6-foot cord provides plenty of slack for comfortable positioning within your workspace.

Connectivity
Connector Type	PS/2
Connector Type	USB 1.1
Connector	USB Type A
Connector	Mini DIN 6-pin
General
Color	Black
Color	Silver
Actual Weight	0.75 lb(s)
Contents	Mouse, detachable wrist rest, software, documentation
Physical Dimensions	2.5"h x 5"w x 5.75"d
Ports/Connectors	Mini-DIN 6-pin PS/2 port USB Type A port
Returns Policy	This product is subject to our return policy. Please see our complete return policy for details.
System Requirements	For PC: Windows 98 or later Available USB or PS/2 port Internet connection or CD-ROM drive to install the software For Mac: Mac OS X or later Available USB port Internet connection or CD-ROM drive to install the software
Warranty - Labor	5 Years
Warranty - Parts	5 Years
Warranty Details	includes free technical support

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Rated 4 out of 5Â by 8 reviewers.

Rated 4 out of 5Â by designergirl great except for scroll ring I have always used this Kensington product-- upgrading it through the years. The new design looks great, LOVE the 4 buttons and the ball, but HATE the new scroll ring. It is cheap and flimsy feeling, and takes a second to "catch". The other downside is that you have to change your hand position to work it, with the old scroll wheel you simply used one finger to roll up or down. Thus, it is LESS ergonomic, and NOT an improvement. It is no longer a 5-star product for me. I hope Kensington sees this and works on it. May 31, 2011

Rated 5 out of 5Â by bergbiker Have a ball with this mouse I've used Kensington products for 15+ years. Just hate to do that stupid mouse dance. My wife's arthritis got me into trackball business, she finds it friendly for old hands. My new iMac now sports this optical Expert Mouse with new features and the same great performance (a right click even). December 11, 2009

Rated 5 out of 5Â by OldProJackofAll Save Your Arm from Pain Solid product great company and saves me from so much daily pain September 18, 2009

Rated 2 out of 5Â by OldHand Not for Vista Unique large ball 4 button trackball was brilliant on XP machines with programmable MouseWorks software. No such luck on Vista; MouseWorks not compatible and workarounds complex and unsatisfactory. "Built in" functions of Vista are rudimentary, lacking programmability or even the ability to set basic cursor functions that survive a reboot. Hopefully version 2.0 of the SlimBlade Trackball driver will allow full functionality of this replacement technology. April 3, 2009