The Pro Fit Ergo TB550 Trackball Mouse from Kensington features a sculpted ergonomic design, providing all-day comfort and a unique 45-degree tilt to improve your wrist and forearm alignment. Easily connect to your Windows, MacOS, iPadOS, or ChromeOS devices via USB, 2.4 GHz RF, or Bluetooth connectivity. Navigate large spreadsheets or webpages with the 4D scroll wheel, allowing you to scroll both vertically and horizontally. A high-quality optical sensor accurately tracks the 34mm thumb-operated trackball, and a built-in dpi switch allows you to choose between 400, 800, 1200, or 1600 dpi for a smooth experience. A built-in trackball ejection button lets you easily remove the trackball for cleaning to help maintain accuracy and precision. Customize up to seven programmable buttons for specific tasks or keyboard shortcuts via the KensingtonWorks software. Enjoy up to four months of battery life on a single charge. The basic mouse functions are plug and play and require no software or drivers to operate.
- Ergonomic Design and 4D Scroll Wheel
- USB, 2.4 GHz RF & Bluetooth Connectivity
- 1600 dpi Optical Sensor
- 7 Programmable Buttons
Kensington Pro Fit Ergo TB550 Overview
Kensington Pro Fit Ergo TB550 Specs
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Kensington Pro Fit Ergo TB550 Reviews
It'd be perfect if it's not too big
I have average-sized hands (about 7.5 inches) and have used trackballs for 15+ years. Over the years, I have maybe 2 Logitech M570s, switched to Elecom EX-G and had probably 4-5 of them across multiple computers. When one of my Elecoms on mt work computer started losing the right-click, I thought I’d try something different this time and see if there is something better out there. Did a little research and found the Kensington TB550. This is my first angled trackball, so I thought it must be more comfortable than the other ones I had. I was wrong. I played with it for a few days, but I felt that the angle just doesn’t work. If it is a little more angled, then my hand would rest on my little finger and the side of my palm. At the current angle, I don’t seem to be able to find a comfortable grip, and at times I felt like my hand is slipping off the trackball. The trackball itself is quite large. I just realized while writing this review that my most comfortable grip on a trackball is using the back of the first segment of my thumb to control the ball, with the second segments of my index and middle fingers doing left- and right-clicks. On the TB550, that same posture puts my wrist about an inch off the working surface, which is definitely not how I want to work. Ended up going to the position with my wrist on the working surface like the product picture. Because of my bigger hand, the center of my thumb is on the ball, and my index finger nearly reaches the front of the first side button. I have a keyboard tray that is slidable, and I noticed that I kept pushing the tray forward with my trackball with this posture, which is kind of bad because I got to pull the tray back out. After a couple days, I could not keep using it for the full day and had to go back to my old trackball because of shoulder discomfort. So, I ended up sending this trackball to my other computer with a sturdier keyboard tray that I use no more than 2 hours a day. I do have to give Kensington credit for having a good driver/software. It’s easy to use like the Logitech software and that was one of the reasons I chose this trackball. I have seen other trackballs I want to try but they don’t come with software that allows the remapping of the side buttons, which is a dealbreaker for me.