The Unified Daughterboard Project is an open standard to unify the USB daughterboards used in custom mechanical keyboard projects.

• Included contents:

• - 1x Daughterboard

• Overview:

• - Slim form factor, allowing for a smaller footprint

• - 2 x M3 mounting points

• - ESD protection, overcurrent protection, overvoltage protection, shielding noise decoupling, and single-path grounding to chassis functionality

• - New Molex Pico-EZmate Connector

• - 1:1 connector pinout to retain compatibility with existing PCBs

• - Specifications:

• - Overall size: 40 x 9 mm

• - Screw holes: 33 mm apart

• - Hardware: 2x M3 screws

• - Connector: Molex Pico-EZmate (781710004)

• - more info here