TrackballsKensington Expert Mouse Wired Trackball K64325
A wired USB symmetrical trackball with a 55 mm ball, a scroll ring and 4 buttons, supplied with a detachable wrist rest.
~$87.65
Ploopy A+ Trackball
An open-source, 3D-printed ambidextrous trackball from Ploopy with a 1.75-inch ball, eight buttons, two scroll knobs, and QMK/VIA firmware.
Some specs could not be matched to a source · Last verified: 2026-10-17
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Where to buy
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Pros
- Eight buttons plus two knobs for vertical and horizontal scrolling
- Ships with QMK; every button remappable via VIA with settings stored on the device
- Flick gestures and layers work without host software
- Switchable left-hand mode; design files, PCB and firmware are open source
Cons
- Roller bearings make a noticeable scratchy noise when the ball moves
- Sold on preorder, so ship dates depend on the order tier
- Wired only, with no wireless option
- The DIY kit requires soldering to assemble
Specs
| Handedness | Ambidextrous |
|---|---|
| Ball size | 44.45 mm |
| Ball position | Center |
| Buttons | 8 |
| Scroll | Wheel |
| Weight | 260 g |
| Connectivity | USB |
| OS | windows, macos, linux |
| Released | — |
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