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Kensington Optical Expert Mouse 4 Button Optical Trackball USB

Kensington Optical Expert Mouse 4 Button Optical Trackball USB - 1
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Reg. Price: $123.30  CAD
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   Shipping Weight:   1.8 lbs
   Part #: 64325
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Features    [ Edit | History ]

The best trackball ever made has just gotten better. Designed for PCs and Mac's, the new Expert Mouse employs Kensington's Diamond Eye optical technology for smooth, precise cursor movement. Surrounding the ball, we have a brand new implementation of our award winning Scroll Ring that puts scrolling right at your fingertips. More comfortable than ever, the Expert Mouse even comes with a soft new wrist rest-right in the box! 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.
Quick Specs:
Package Contents Wrist rest
Device Supported Computer
Movement Detection Optical
Pointing Device Connectivity Technology Cable
Height 2.5"
Width 5"
Depth 5.8"
Pointing Device Host Interface USB PS/2

Specifications    [ Edit | History ]
General Information  
     Brand Name: Kensington
     Manufacturer: Kensington Computer Products Group
     Manufacturer Part Number: 64325
     Manufacturer Website Address:
     Packaged Quantity: 1
     Product Model: 64325 Expert
     Product Name: Expert Mouse 64325 Trackball
     Product Type: Trackball
     Pointing Device Host Interface: USB
     Additional Information:
  • DiamondEye Optical tracking for superior accuracy.
  • Award-winning Scroll Ring - precise scrolling at your fingertips.
  • Exceptional comfort for ultimate productivity.
  • Large ball for maximum precision and control.
  • Detachable wrist rest cradles your hand in comfort.

     Device Supported: Computer
     Package Contents: Wrist rest
     System Requirements:
  • PC running Windows 98 or later with an available USB or PS2 port.
  • Mac running OS X or later with an available USB Port.
  • Internet connections or CD ROM drives to install the software.

Physical Characteristics  
     Depth: 5.8" (146.1 mm)
     Height: 2.5" (63.5 mm)
     Width: 5" (127 mm)
Pointing Device  
     Movement Detection: Optical
     Pointing Device Cable Length: 6 ft
     Pointing Device Connectivity Technology: Cable

Kensington 64325 Customer Reviews

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding Kensington 64325 reviews.
Experience: 5 Days
 Verified Owner
Very smooth and fairly accurate for low speed pixel stepping, yet easy to accelerate with that big ball. Great for design and surfing. Highly recommended for tactile mobility or elderly assistance. Nice cushion and no mouse pad. Takes up less desk real estate and always in one place, like keyboard trays. Proven model for many years. There's nothing that can compare to its uniqueness.
This is not a gaming or coding cut/paste input device. Do not buy if you're a professional requiring high dexterity. Brief learning curve for mousers. Receiver bearings are tiny and subject to pitch with lint and grease. Keep it clean. Scroll wheel is kinda rough'n'bumpy and odd to spin around in comparison to the ball. Kinda hurting the backside of my thumb knuckle contacting that heavy left button, getting used to it, would have liked to see the ball touch, (even brush scrolling) sensitive. There's no competing manufacturers, monopolistic.
For my purposes, i am really happy with the result since i last used a trackball some twenty five years ago. Kensington has a good name for quality and I did like Wacom's price or those silly gaming mice that feel like stealth weapons in my hand. Is a reliable input device being in one spot and kept clean. Beyond satisfactory, I will buy again if they improve on the scroll and button sensitivity. I will also give this another star for the *ultra-smooth ball*. Thanks for the prompt service to get this into my order already going out the door!

Experience: 3 Years
Mouseworks software not Vista/7/64bit compatible
This trackball was awesome until I upgraded from XP to Vista 64 & then Win 7 64 bit. The driver/software is not compatible & they have no plans to make it compatible. It only works as a basic mouse under those systems, no programability. Under XP it was great with tons of options. Compatibilty mode doesn't help either. Unless you have XP with no intentions of upgrading I wouldn't buy this again.

UPDATE! Kensington is in the process of creating a new trackball software that is compatible with Win Vista & 7! Beta testing it now. So far so good.

This review was modfied by poster @ 05-05-10 03:12 PM

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