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The voltage of each wire is dictated by the ATX standard. Each wire has it's own voltage or is dedicated to perform a function. If you Google "ATX wiring standard" you should be able to read about it. thanks for answering my question patiently, i'll do a board search next time before posting ...

actually,the guide has nothing wrong, it was completely my own idea tried to use red wire instead of yellow, by the way, what's wrong with red wire, why it can't be used ? please forgive my silly question The red wire is 5V and the yellow is 12V. You need 12V for each of the three supply inputs on ...

That should be correct. There should be no red wires. Just follow the picture I sent. Just out of curiosity, where did you get a guide that told you to use a red wire from the power supply? actually,the guide has nothing wrong, it was completely my own idea tried to use red wire instead of yellow ...

I think you may have an old or bad copy of the guide. The latest guide can be downloaded here: http://www.geneb.org/rostock-max/Rostock-MAX-Assembly-Guide.pdf I have enclosed a picture of what the connector should look like after wired properly. Welcome to the Forum! thanks for the reply judged by ...

excuse me , i am a new guy from Taiwan this is first time assembling rostock max kit RAMBo controlle require four yellow wires and four black wires in the power supply to provide power to the the Onyx heated bed and the hot-end. according to the assembly guide the four black wires on the left most ...