# TG4x v2.1 40% sandwich keyboard driven by a pro micro. For more info please refer to [MythosMann's GitHub](www.github.com/MythosMann/tg4x). * Keyboard Maintainer: [MechMerlin](https://github.com/mechmerlin) * Hardware Supported: TG4x v2.1 PCB * Hardware Availability: [Geekhack](https://geekhack.org/index.php?topic=99163.0) If soldering in a RGB underglow strip, please use pin D2, the pin labeled RXI on the pro micro. Make example for this keyboard (after setting up your build environment): make tg4x: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).