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 Classic 2 Trackball
An open-source, 3D-printed wired trackball with a 44 mm finger-operated ball, a scroll wheel, and QMK/VIA button customization.
Some specs could not be matched to a source · Last verified: 2026-10-17
~$145
Where to buy
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Pros
- Ships with QMK firmware and works with VIA, so every button can be remapped
- Fully open-source design files make it easy to print replacement parts
- PMW-3360 sensor goes up to 12,000 CPI
- Uses Omron D2LS-21 switches and a USB-C port
Cons
- Wired only, with no wireless option
- The maker's store lists prices in CAD only, and these pages don't show any Japanese retail
- At 260 g and 175 mm long, it's a large device
Specs
| Handedness | Right |
|---|---|
| Ball size | 44 mm |
| Ball position | Finger |
| Buttons | — |
| Scroll | Wheel |
| Weight | 260 g |
| Connectivity | USB |
| OS | windows, macos, linux |
| Released | 2025 |
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