#YMDK YMD21 v2

A 21-to-24-key numpad with RGB Underglow, USB-C, and support for in-switch LEDs.

• Keyboard Maintainer: The QMK Community
• Hardware Supported: YMDK YMD21 v2 (ATmega32U4)
• Hardware Availability: YMDKey.com, AliExpress

Make example for this keyboard (after setting up your build environment):

make ymdk/ymd21/v2:default

Flashing example for this keyboard:

make ymdk/ymd21/v2:default:flash

#Bootloader

Enter the bootloader using one of the following methods:

• Bootmagic reset: Hold down the key at (0,0) in the matrix (usually the top left key or Escape) and plug in the keyboard
• Physical reset button: Briefly press the button on the back of the PCB
• Keycode in layout: Press the key mapped to QK_BOOT if it is available

See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.