Hello,
I have the Commell LS-372 motherboard, which has the P4 4-pin power connector as its only power connector. I have this set up in the house for setup and testing and I am using an old 400W PC power supply, which does indeed have the P4 type connector.
Problem: The PSU expects a signal through the 20 pin ATX big connector (not used) to turn on. Normally in a home PC (from what I understand) a switch on your case is connected to your MB, which when hit, signals the PSU through the 20pin ATX to turn on, which in turn send all the juice back down the wires to power everything. My MB does not have this signal, so how can I get the PSU to turn on???
I have a simple switch connected to the PW SWITCH pin headers on the motherboard and the P4 connector from the PSU is attached to the board. When I hit the switch, no go...no signal sent to PSU to turn on...
