# Matrix Cain replacement PCB This was the replacement PCB for the Matrix Cain keyboard. This firmware **DOES NOT** support the original PCB shipped with the Cain keyboard. * Keyboard Maintainer: [astro](https://github.com/yulei) * Hardware Supported: Matrix Cain keyboard * Hardware Availability: Matrix Lab Make example for this keyboard (after setting up your build environment): make matrix/cain_re:default See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).