SeeMeCNC Rostock MAX v2 Assembly Manual page 194

Now bring out the stepper motor wires and connect them into the motor plugs along the bottom
edge of the RAMBo controller. Each axis is labeled – make sure you match them up! The position
marked "E" below is where the extruder connects to.
Fig. 16-34: Stepper motor connectors.
You'll notice I've marked one of the connectors with a double red "X". This is because this
connector is for an extra Z axis. Delta configuration printers don't require this – I pointed it out to
ensure you didn't accidentally plug the extruder into it...like I did. *ahem*
Fig. 16-35: Stepper motors plugged in.
Just a quick note on the stepper motor connectors. The connectors you see in Fig. 16-35 are 4
pin latching connectors. That means they've got a little locking tab that positively engages a little ledge
on the inside of the socket that's on the RAMBo. Sometimes SeeMeCNC has to procure stepper
motors from a secondary source. These motors don't have the locking tab feature.
The connector will work just as well as the locking version, but does
look different and can be accidentally inserted backwards. The pin
indicated by the arrow in the Fig. 16-35.5 is pin #1. This pin is on the right
edge of the connector when you plug it in to the RAMBo. These motors are
made by Kysan or Automation Technology and are just a little bit different
Rostock MAX v2 Assembly Guide
Fig. 16-35. Alternate
connector style.
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