Elecom EX-G Trackball

Elecom EX-G Trackball series came out starting in 2014. Second generation came out in 2015-10.

There are left-handed version, right-handed version, and also wired and wireless versions.

• Wireless via USB transceiver.
• 1 AA battery.
• 6 buttons. (left, right, middle (wheel), left top 2, pinky)
• Scroll wheel can tilt left/right. Can also be pressed, as 3rd button.

Hold the pinky strip button slow down DPI.

Ball Size

Ball diameter: 34 mm.

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  Trackball Ball Sizes and Replacement

Software to Reprogram Buttons

However, software are available to reprogram the buttons, for Microsoft Windows and Mac.

download Elecom Mouse Assistant at http://www.elecom.co.jp/global/download/utility/mouse_assistant/

Work in Linux?

As of 2021-10-16, all buttons works on linux out of the box. Linux kernel dated before 2019-05-30, the pinky button may not work.

the M-XT3DR model is NOT fully functional in Linux out of the box; the rightmost button isn't detected at any level, and “right click” comes mapped to the middle button. — user Trilkhai, 2017-02-11

The top left 2 buttons are browser back and forward.

You can remap mouse buttons in Linux using xinput. [see Linux: How to Swap Mouse Buttons]

Size Comparison

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  Trackball Size Comparison

Left-Handed Version

Model Numbers and Differences

Elecom M-XT1DRBR

First generation. Wireless.

Elecom M-XT1URBK

First generation. Wired. Buy at amazon

Elecom M-XT2DRBR

Second generation. Hold the pinky button to slow down cursor. Hardware function.

Elecom M-XT3DRBK

Wireless. No hold pinky button to slow down feature. Buy at amazon

Elecom M-XT3URBK

Wired. Buy at amazon

Elecom M-XT4DRBK

Left handed version. Wireless. Buy at amazon

Elecom EX-G Pro

Elecom EX-G Pro (34mm)