Recently started putting together a pc and at the end stage now. The fans that came with the case I ordered had 4 pin miles connecter ends but there’s only wires going into three of the pins. I can’t find anywhere to plug them in on the pc (I have looked at the psu but there’s no port) so I got an adapter to go from the molex ends of the fans to an end that fits into the psu (I don’t know what this male end of the adapter is but it it has 6 squares as to plug into the psu. The problem is that once I have plugged in my fans with this adapter directly into the psu, when I try turning the pc on the rgb and fans flick for a second but do not turn on nor does the pc. Once the case fans are unplugged however the pc turns on like normal. Any thoughts to how I could fix this would be greatly appreciated.