2 layers82.3 × 35.5 mmFc980c controllerwlhlm/fc980c-controllerLeopold FC980C replacement keyboard controller38 parts20
2 layers141.5 × 36 mmRGB HHKB ControllerCipulot/RGB-HHKB-ControllerHHKB Pro 2 Keyboard Controller Board with RGB strip support.33 parts8
2 layers406.4 × 158.6 mmCDSCipulot/CDSReplacement PCB for the CDS Technology keyboard (CDS-G5CSKB, Topre HiPro).223 parts4
2 layers82.3 × 35.5 mmFc980c controllerwlhlm/fc980c-controllerLeopold FC980C replacement keyboard controller36 parts20