Ultimate Hacking Keyboard, Addon Modules

By Xah Lee. Date: . Last updated: .

Addon Modules

An innovative design of Ultimate Hacking Keyboard is the addon modules.

These can be attached simply by sliding them in. They are held by magnets.

they are for:

These are sold separately.

In general, the addons are nice to have. But for long work hours, they are not replacement of dedicated mouse.

UHK v2 modules 20230406 02929-s33
UHK v2 modules. • Thumb Key Cluster with multi-directional scroll ball • Trackball • Touchpad • Trackpoint

Thumb Key Cluster Module

by default the keys are:

    Delete ⌦
                 enter
backspace
uhk80 2025-10 Zk9XF-50
uhk80 2025-10 Zk9XF-50
UHK v2 l 20230406 20640-s33
UHK v2 with Thumb Key Cluster.

Trackball module

Best. Most precise and fast. Among the right-hand addon modules, this is my favorite.

uhk80 2025-10 Gk2pH-50
uhk80 2025-10 Gk2pH-50
UHK v2 r 20230406 30800-s33
UHK v2 with trackball.

Trackpoint module

Trackpoint require fine finger control. Difficult to get to a precise point fast. Sometimes overshoot.

UHK v2 top 20230406 28034-s33
UHK v2 with addon modules.

Trackpad module

Very fast, but sensitive. Difficult to pinpoint on a pixel. There is no buttons on it.

UHK V1 with Modules

the add-on modules also works with UHK v1.

uhk v1 w modules 20230420 qZYc5-s1400
uhk v1 w modules 20230420 qZYc5-s1400

UHK Add-On Modules Manual

Ultimate Hacking Keyboard