I am getting ready to build a new PC and already have some of the parts lined up. My power supply has three SATA power connectors, and that is enough for now, but I was thinking that somewhere down the road I may need one or two more. My first thought was that I could use an adapter that goes from a 4-pin Molex connector to two SATA power connectors, like this one:http://www.ebay.com/itm/IDE-4Pin-to-SATA-15Pin-Y-Splitter-15cm-hard-disk-Power-Supply-Extension-Cable-/121171230862?pt=US_Drive_Cables_dapters&hash=item1c365e408e
I don't foresee using the 4-pin Molex connectors for any other purpose anyway, and this power supply comes with two of them. The problem is that when I look at the pinout of the Molex connector, I see +12v, com, and +5v. The SATA power connector is supposed to supply those voltages that I just mentioned, plus +3.3v. How can that adapter work correctly if there will not be a +3.3v source going to the SATA power connector?