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Item#: N82E16826125109

Kensington Expert USB Wired Optical Trackball Mouse

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  • USB Wired
  • Optical
  • Detachable wrist rest

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  • Specifications
  • Warranty & Returns
  • Reviews

Learn more about Expert

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details

Customer Reviews of Expert

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  • Michael B.
  • 9/8/2013 3:39:13 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsGood Trackball, poor scroll wheel

Pros: The overall feel of the trackball is nice, moving to this over a mouse as I span 6 displays on my desktop now, and a mouse simply isn't efficient enough to use for it without a sore wrist. The ergonomics are good with the cushion as well, very comfortable to use once getting used to it. Very accurate and useful so far.

I'm using it under Linux alone, which of course comes with no magical client to adjust or remap keys, but is possible to do other ways. It would be nice to have something that could set this itself, if only more vendors realized that people use an OS other than windoze these days...

Cons: The scroll wheel around the ball. It rides roughshod on no form of bearing or glide, feeling more like a piece of sandpaper riding across the plastic on the unit. While quite useful, it would be much better if Kensington took note of the scroll wheels on the Logitech Performance MX (my former mouse) with ball bearings that it glides almost indefinitely. It will only grind and slide around maybe half a turn with a fierce thrust of my finger, and often ends up catching my cursor to displace it was well. I have to spin it constantly for the short throw to scroll through a page, which is really quite annoying.

I really hope they pull their head from the ground and put some form of bearing or glide on this, teflon alone would improve this 500%, and I may get frisky to modify the design myself as I do love the device otherwise.

Reading other comments online outside newegg, some report that over time the scroll wheel to become problematic, which worries me, but I knew this going into it. I really hope this is not the case with mine, as every logitech mouse or trackball I've ever had lasts no more than a year or two, and would love to find Kensington a suitable replacement for them.

Other Thoughts: If not for the poor scroll wheel, this would be an easy 5 egg review, but otherwise feels like a complete afterthought.

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  • Jeff E.
  • 1/20/2013 6:49:00 AM
  • Ownership: 1 day to 1 week

2 out of 5 eggsGreat design, poor quality

Pros: Comfortable! This was exactly the shape I wanted, and I loved the wrist pad.

Cons: Unfortunately, the scroll ring on the first one I ordered was somehow sticking, and dragging. RMA'd for a second try, but that one was just about as bad, but this time, one of the buttons would sometimes stick, or not click at all. Ended up returning it.

Other Thoughts: If there's ever a new revision of this, I'd definitely try it again. I miss my track ball.

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  • Chris S.
  • 12/7/2012 12:09:15 PM
  • Ownership: 1 day to 1 week

2 out of 5 eggsNothing "expert" about it...

Pros: Tracking is superb, rolls smoothly after some buffing (see below)

Cons: Buttons feel extremely cheap when clicking.
The ball is about 1-2mm too small for the cup, and therefore rattles around (VERY annoying).
The wrist rest is comfortable, but the attachment plate on the bottom is a mile off, meaning that it doesn't attach properly, and once you do get it attached, it isnt flat and makes the mouse wobble when you put your hand on it. Also, when i went to take the wrist rest off, one of the nubs that holds the attachment plate to the mouse broke off!

Other Thoughts: When I first got it out of the box, there must have been some gunk from manufacturing left on it because the ball required tons of force to actually move it. I buffed it on my sleeve and now it glides a lot better. But given all the problems this device has, I probably will not be using it.

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  • Sean P.
  • 8/2/2012 12:33:06 AM
  • Ownership: more than 1 year

5 out of 5 eggsnever going back

Pros: Have had this device since I was 9(am now 21). And it still performs to this day. Very ergonomic.

Cons: Your wallet hates you

1 out of 1 people found this review helpful. Did you? Yes No

  • Gerald S.
  • 6/9/2012 1:41:58 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsBest Trackball on the market

Pros: Comfortable
Very nice looking
Feels solid
Worth the money
Very smooth on screen navigation

Cons: The only negative about this trackball is the fact that it is not wireless.

Other Thoughts: About four years ago I was getting cramps in my hand and it would go numb due to all of the time I was spending on the computer. After trying a few other trackball and tablet options I ordered this one. Wow! Within a week I was not having any numbness or pain in my hand. In addition, The trackball worked great and was easy to navigate.
After about three years I went to replace it with the slim blade model but it was not near as solid a piece of equipment. Ended up ordering another one of these instead.

It makes a great gift for someone you know is having issues with pain and numbness using their mouse.

1 out of 1 people found this review helpful. Did you? Yes No

5 out of 5 eggsBest pointing device ever

Pros: Fast, smooth. Nothing irritates me more than having to pick up a mouse and move it over on my desk because I've run out of room to move my pointer. No such problems with a trackball, and the Kensington Expert Mouse has the smoothest, easiest to control trackball of any I've tried. The ball operation isn't entirely smooth right out of the box, but after a little use to break it in, it gets really fast and smooth.

Cons: Can't buy replacement parts when you finally wear the thing out. After more than 5 years of daily office use, I have worn out the rubber on the scroll ring, and was told I can't buy a replacement ring. It still works fine, just isn't as comfortable to use. Oh well, given the amount of use I've gotten from this one, I guess I shouldn't complain.

2 out of 2 people found this review helpful. Did you? Yes No

4 out of 5 eggsHardware great; software useless

Pros: Excellent feel and control and comfort.
Scroll ring is very nice and smooth.

only 4 stars because I haven't gotten the full value of the purchase yet - can't program the extra buttons.

Cons: If you're on Windows 7 Pro 64-bit, do NOT download and install the software from their site. Not only does it not work, it causes the device to stop working altogether! I had to hookup another mouse just to be able to uninstall the Trackballworks software. Maybe they will fix it someday...
The good news is that you don't really need it for basic functionality and that's what I really wanted.

Other Thoughts: I am an input device fanatic because I work at my computer about 12 hours per day (no games - just work) and I have problems with my hands. Guys like me need to be able to switch several times each day to reduce the stress of having your hands in only one position all the time.
I have lots of Logitec trackballs and love them. I also have the new Logitec Wireless Touchpad and it's excellent.
I really like this Kensington trackball because of the size of the ball.
This one is a bit pricey for most users but guys like me need this stuff so, I'm happy with it and will feel like I've gotten a good deal if Kensington ever fixes their software.

2 out of 2 people found this review helpful. Did you? Yes No

  • Walter B.
  • 8/31/2011 7:59:28 AM
  • Ownership: more than 1 year

3 out of 5 eggsFabulous Device; Windows 7 Drivers a Flop

Pros: Absolutely the best mouse-like device around. Doesn't move so footprint is limited. Easy to maintain. The programmable buttons are hugely useful. I make one the Enter key, eliminating a lot of hand motion - for example, clicking in a dialog box and hitting the button instead of the keyboard's Enter.

Cons: So why only 3 eggs? If you're not on Windows 7 give it 5+. But the Windows 7 software strips button programming functionality under XP that I depended on, like assigning multi-character strings to buttons, and separately programming Ctrl+button, Alt+button, etc. And each version of the Windows 7 driver has its drawbacks. (Maybe that's why there are 3 versions on their web site.)

Other Thoughts: I've been using Kensington trackballs for about 20 years and they are superb. This one's optical sensor solves the ongoing maintenance problems with the older mechanical ones, although Kensington's customer support was always great. But I'm pulling my hair out about the drivers. Acceleration doesn't work under TrackballWorks 1.0.1. I had reliability problems with 1.0.4. Installing the 1.1 beta on W7/64 required disabling driver signatures in the boot menu, and unaccountably it won't allow programming the Enter key to a button. (I'm using keyboard macro software as a partial workaround to program strings, but it doesn't always work for Enter.) Wish they'd brought the much more feature-rich MouseWorks over to W7. If you're on W7, watch for a better driver (oh yeah, no automatic update or notification mechanism), then grab one of these.

5 out of 5 people found this review helpful. Did you? Yes No

  • Nathan F.
  • 5/15/2011 2:45:01 AM
  • Ownership: more than 1 year

5 out of 5 eggs

Pros: Best Trackball on the market. Very precise.

Cons: Price. Another reviewer had problems with some software not playing nice.
I'm not knocking off any points because of the price, there are excellent alternatives.
I've never had any software problems.

Other Thoughts: I originally used one of these because an employer put them with each computer to prevent repetitive motion injuries.
I finally bought one of my own a couple of years ago. I also use the Logitech "Trackman Marble" and a regular mouse, for the $$$ the Marble is the best.
This is a luxury unless you do serious CAD, or Graphics work.

1 out of 1 people found this review helpful. Did you? Yes No

5 out of 5 eggsBest input device there is

Pros: ++ 2 inch trackball is much easier to use navigate with than just about any other trackball on the market, allowing finger use instead of just the thumb and long sweeping strokes
++ Scroll wheel around the ball is the most user friendly wheel I've ever used
++ Like other trackballs vs. mice, it doesn't slide off the mouse pad or get pulled around by the cord
++ Optical sensor makes for smooth tracking

Cons: -- Some software is awkward to use, e.g., Google Sketchup assumes a scroll-wheel button you can press while you drag the mouse around. This is difficult to do with this trackball.
-- Kensington refuses to make special drivers for Vista, so the extra buttons are not as useful as they could otherwise be
-- Every couple of months, a build-up of dust blocks the sensor or gets caught on the ball supports, making tracking difficult or fail altogether. This requires taking the ball out and removing the dirt (close your eyes and blow it out, then go wash your face)
-- $$$

Other Thoughts: This may not be the ultimate input device, but it is the closest thing I've found to it. It's price, unfortunately, puts it in the luxury input device category, but if you use your computer a lot, it is well worth it

4 out of 4 people found this review helpful. Did you? Yes No

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Item#: N82E16826125109
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