mobo is being powered by an 8 pin connector and it only requires a 4 pin. i need the 8-pin to power a graphics card but if i do that that then i dont have a way of powering the mobo. will it work if i take 4pin molex to 4 pin adapter and hooked it up to one of the spare 4 pin molex connectors i have and use that to power the mobo. the mobo needs a 4-pin ATX12V. so will this work and should the existing 4pin molex be already connected to the psu and ready to use.