A bit late in replying, but I put a post in the Eleksmill section on how to calibrate your steps. This method applies to just about any cnc device.
*** all connection use the laser connector ***
12V AC/DC is the power input, and connects to the + and - pins on the laser connector.
TTL is the TTL/PWM signal, one pin connects to the S pin on the laser connector (you may need to connect the other to the - pin which is actually a ground but usually not required)
12V is the laser connector (goes to the laser diode), and I am not sure but GRN is probably the fan.
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