# YMD40 AIR40 A 40% ortholinear keyboard with per switch LED support and USB Type C. * Keyboard Maintainer: [The QMK Community](https://github.com/qmk) * Hardware Supported: YMD40 AIR40 PCB (ATmega32U4) * Hardware Availability: [ymdkey.com](https://ymdkey.com/collections/40-mini-diy/products/air40-rgb-hot-swap-cute-40-mechanical-keyboard-assembled-qmk-via-type-c-pcb-cnc-case-plate-kit) Make example for this keyboard (after setting up your build environment): make ymdk/ymd40/air40:default Flashing example for this keyboard: make ymdk/ymd40/air40:default:flash To reset the board into bootloader mode, hold the key at the top left of the keyboard while connecting the USB cable (also erases persistent settings). 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).