Extra PCB
Solder version of Aaru is compatible with most layouts ANSI, ISO 87%, 7U spacebar, WKL, stepped Caps, splitting left and right "shift" and the regular ansi. It leaves room for 2-pin LEDs for more. Solder version has the LEDs in south position.
HotSwap Version supports only ANSI and has per switch RGB LEDs (north facing)