# ydkb/ydpm40 A pair of 40% keyboards, that share the same PCB, designed by yang. Among the two, ydp40 has a Planck-like layout, while ydm40 is more traditional. * Keyboard Maintainer: [xofyarg](https://github.com/xofyarg) * Hardware Supported: https://github.com/yangdigi/YDPM40-Keyboard-PCB * Hardware Availability: https://ydkb.world.taobao.com/ Make example for this keyboard (after setting up your build environment): make ydkb/ydpm40:default Flashing example for this keyboard: make ydkb/ydpm40: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 The ATmega328P MCU comes with BootloadHID. To enter it, hold down the top left key and plug in the keyboard.