# YMD75 75% keyboard from YMDK. YMDK sell the board and name it "YMD75". * Keyboard Maintainer: [Wayne K Jones](github.com/WarmCatUK) * Hardware Supported: rev3 (ATmega32u4) * Hardware Availability: Make example for this keyboard (after setting up your build environment): make ymdk/ymd75/rev3:default Flashing example for this keyboard: make ymdk/ymd75/rev3:default:flash 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). ## Bootloader Enter the bootloader in 2 ways: * **Bootmagic reset**: Hold down the key at (0,0) in the matrix (usually the top left key or Escape) and plug in the keyboard * **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available