The NuPhy Kick75 offers remarkably good hardware customizability in a traditional sense. Uniquely, it also allows you to convert the keyboard between a standard profile and a low-profile with the aid of a separately purchased conversion kit.
Be aware that while the standard profile version of this keyboard is compatible with all standard 3-pin or 5-pin MX-style switches, the low-profile version is only compatible with Gateron Low-Profile 3.0 (sometimes labeled Gateron Nano) switches. For further details about the design of these switches, NuPhy has an article on their blog.
We bought a standard profile version and purchased a low-profile conversion kit. There are instructions included with the kit, but they’re basic and can be confusing, especially if you aren’t already familiar with building or modifying keyboards.
We filmed our experience with the conversion process, and the video can be a helpful reference if you run into trouble.
While the steps aren’t especially difficult, the process is involved and requires nearly a full disassembly of the keyboard, so expect it to take some time (likely in the neighborhood of one to three hours, depending on your familiarity with keyboards). Of particular note for this process, the stabilizers are plate-mounted in the standard profile version but PCB-mounted in the low-profile one, so you’ll need to fully remove and reinstall them during the conversion.
Lastly, we ran into a small compatibility issue with the extra rotator knob that came with our low-profile conversion kit as it was designed for the QMK/VIA version of the keyboard, not our NuPhy.io version. You can see in this photo comparing the two knobs that the QMK/VIA knob uses a different PCB arrangement.
NuPhy has been shipping replacement knobs to those who receive incompatible knobs for their version. You can read more about people experiencing this issue in this reddit thread. Once we received our correct replacement knob, it worked as intended without issue.
For images of our keyboard in its low-profile configuration, see the Ergonomics section.