Same spot as the white board, there are 6 pads on the right side of the board below the cap. Mine is a 2.3 or 2.4 board (can’t remember) Yours is marked 2.3 (lower left corner). On my board, it matches the white board below. I’ve got a year old nomad pro, and a shapeoko 3 xl, and that set of pads seems to be the same on both, and matches this white board, at least in this spot. On the nomad, the spindle controller plugs in there. There’s a handy PWM and GND there. (Keep in mind, I don’t work for Carbide3D, they’re the ultimate authority here)
