Hello, i found that in your guide (voom-en.pdf) pag. 2 you say:
6) Connect the Red / Black / White (terminated in fastons connectors) to the
power supply. Red is un-switched battery, white is switched battery
(ignition) and Black is GND.
But on Voom PC assembling guide (voomPC-Assembling_M1-ATX-en.pdf) on picture
at page 8 you connect the red wire (un-switched) to J12 wich is switched
power.