Unified Daughterboard C3/C4

USB-C daughterboard with ESD protection as used by many keyboard PCBs including Bakeneko60/65, J-02, Atlas and many others.

Designed by ai03 and contributors (GitHub project)

Features:

• USB-C socket
• ESD protection
• Gold-plated (ENIG) finish, black solder mask
• UDB C3 uses a 4-pin cable with JST-SH connectors on both ends (3 lengths available)
• UDB C4 uses a new Molex PicoEZmate connector (not compatible with the JST cable)