Ember, a Portable

Ember, a Portable "Bench" Power Supply

Unified C4 Daughterboard and Molex Pico-EZmate Cable

Unified C4 Daughterboard and Molex Pico-EZmate Cable

Unified S1 Daughterboard and Molex Pico-EZmate Cable

Availability: In stock
Unified S1 Daughterboard and Pico EzMate Cable

Unified S1 Daughterboard and Molex Pico-EZmate Cable

Each order will contain 1x Unified S1 Daughterboard and 1x Molex Pico-EZmate Cable. They are not sold separately.

The Unified Daughterboard Project is an open source project designed to standardize the USB daughterboards used in custom keyboards, spearheaded by many community contributors such as ai03. The newest releases by the project team are the S1 and C4 daughterboards. 

This new S1 revision has a slimmer form factor and a different internal cable connector compared to the preexisting C3 daughterboard series.


  • Slim form factor, allowing for a smaller footprint
  • Secured to the case by 2x M3 screws
  • ESD protection, overcurrent protection, overvoltage protection, shielding noise decoupling, and single-path grounding to the keyboard case
  • New durable Molex Pico-EZmate Connector that clips in vertically
  • 1:1 connector pinout, allowing for backwards compatibility


  • Overall size: 40 x 9 mm
  • Screw holes: 33 mm apart
  • Hardware: 2x M3 screws
  • Connector: Molex Pico-EZmate (781710004)
  • PCB layers: 4 (7628 stackup)
  • Cable length: 170mm
  • Further specs and implementation details here

Note: The cable should be handled with care. Any kinks can cause connection issues. The cable connects from the top, not the side.

 For documentation and more information, please see the new Unified Daughterboard site.

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CannonKeys LLC
United States
CannonKeys sells custom mechanical keyboard kits, parts, and accesories. https://cannonkeys.com/pages/about-us