Never Two Without Three

The HHKB Professional 2 series of boards are the pinnacle of HHKBs for a lot of people. Therefore, it was only a matter of time before I would support the entire range of layouts: ANSI and JIS.
But I didn’t stop there, in fact, I decided to make the mainboard for both layouts compatible with the Professional 2 and the new Hybrid/Classic series too (improperly called Pro 3 by some). This new release is called EC Pro X, where the X marks the compatibility with both the Pro 2 and Pro 3 series.

Dedicated controllers for the 2 series have been developed, so that the user can deploy the kit in both versions. For the Professional 2, there are 2 controllers, one with a USB hub and one without it. The Hybrid/Classic one instead is without it by default, since no USB port opening is available in the OEM case.