Quefrency Rev. 4 features Kailh hotswap sockets with a fixed layout. The left macro portion and right column can be broken off, and split backspace or 2u backspace can be used.
Make example for this keyboard (after setting up your build environment):
make keebio/quefrency/rev4:default
Example of flashing this keyboard:
make keebio/quefrency/rev4:default:flash
See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.
A build guide for this keyboard can be found here: Keebio Build Guides