6 pin adaptors come with 2x molex plus, do you have to plug 2x molex connections in from the PSU?, or is there a molex for PSU and one spare to be used for other devices?. I have a 6 pin cable and im not sure wheather you plug in two molex from the PSU or Just one molex from PSU and another as a spare for other devices to connect to to be powered. Much appreciated.