Geeetech Prusa I3 pro W Building Instruction page 94

Shenzhen GETECH CO.,LTD
Step5. Now we can connect the wires to the PSU.
Mind the color of the wires. The wrong connection of the wire will cause serious
damage to the PSU and even to the control board of the printer.
As you can see, there are 7 wires terminals in total.
Note the correspondence between the color of wires and the connector.
After finish the connecting, close the cover of the connector in case any electric
shock.
Brown------L
Blue ------N
Yellow------ GND
Red ------ --+ V
Black------COM
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