I have a HP Envy 750-103a with a 3TB HDD, I want to add 2 extra SSD drives, but there is only 1 spare SATA power cable, I am by no means a computer expert, but want to try this myself, I have a Molex connector with 2 SATA connectors on it, but I can't seem to find a place to connect this, I think I'm ok for the connections to the Motherboard (think there is 4 SATA ports) will I need to do something in the power unit or is there a way to connect the molex somewhere, as I said, I'm not computer savvy, but would like to try this myself before taking it to an expert. Any help would be very much appreciated.