I bought the latest mb, 3 stepper drivers, 6 mech limit switch from
this ebayer. The motherboard won't turn on unless I use a jumper between the black and green power supply leads. The seller also sent me an email stating that there is one connector wire that was omitted, should be an easy fix. All this is too much for me, so I'm selling the entire package in favor of Reprap gen6 package. I have yet to test the limit switch and drivers. So, if you are feeling adventurous and would like a great deal on this package, let me know.