I have just bought the higher power board which although states uses a 3.5 A peak Toshiba chipset is rated at 3 Amps max as a board. From what I can gather the difference beween the two boards is not just the current select resistors but also the Toshiba Chopper PWM chips fitted.

The data sheet states:
IOUT = AHQ: 3.5 A (peak)

IOUT = AFG: 2.5 A (peak)
The lower current board may well be fitted with the lowe spec TB65600AFG chip rather than the AHQ, its worth looking into. I have downloaded the Toshiba data sheet if you are interested.

Have you managed to work out what the mating connector is for the limit switches/eStop inputs on these boards? Its a small 5 way polarised vertical PCB connector. My board was not supplied with the mating cable ended part that I need to fit to my switch wires.

John