# superuser frl An FRL TKL PCB supporting 7u bottom row only. * Keyboard Maintainer: superuser * Hardware Supported: superuser frl * Hardware Availability: Group buy Make example for this keyboard (after setting up your build environment): make superuser/frl: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). ## hardware information One LED only, in caps lock.