The EFC-SB, or EFC SkatterBencher edition, is a customized version of the original ElmorLabs Easy Fan Controller. I’ve used since SkatterBencher #26. The base product functions and features are the same as the original EFC, with here and there a tiny improvement.
The most obvious difference is that this EFC version comes in the SkatterBencher color scheme: yellow, white, and black.
The EFC-SB sports a white PCB with gold markings and prominently features a slightly modified SkatterBencher logo. The black power and fan connectors contrast against the yellow I2C and external temperature sensor connectors. The configuration button is also black, and we changed it to a white LED with a yellow lens. The EFC-SB also has a white 3D-printed back cover to protect the soldering points.