Elecom EX-G Pro Trackball
This came out around 2018-08.

Scroll wheel can be pushed left/right.

- 3 modes: bluetooth, or USB dongle wireless, or wired.
- Rechargeable. Just plug it in.
- Gaming grade optical sensor.
- DPI can be changed.


Work in Linux?
Yes. Plug and play.
Linux kernel dated after 2019-05-30 supports the Fn1 Fn2 Fn3 buttons.

source https://github.com/torvalds/linux/blob/master/drivers/hid/hid-elecom.c
You can remap mouse buttons in Linux using xinput
.
[see Linux: How to Swap Mouse Buttons]
Compared to Ex-G
The Ex-G Pro is improvement of the previous Ex-G.


• Elecom EX-G Pro Trackball • Elecom EX-G Trackball

Buy
- patreon me $5
- amazon egift card to xah@xahlee.org , $20 is nice.
- paypal to xah@xahlee.org , $20 is nice.
- bitcoin me 19dfoa3Q7oehm9MwCULQzBG8vqfCaeMazH
If you have a question, put $5 at patreon and message me.