Molex plug to SATA power

I need an extra SATA plug than my PSU has to offer. Taking an old PSU, I snipped off a Molex 4 pin plug, and a couple of SATA plugs, thinking to "fix me up a solution". Problem is, the molex has a red, a yellow, and two black wires. The SATA has a red, a yellow, two blacks... and an orange wire. What do I hook the orange wire to?

 

There are also other, smaller connectors, most of which have four wires: two black, one red, and one yellow. Unlike the standard mains electrical wire color-coding, each black wire is a ground, the orange wire is +3.3 V, the red wire is +5 V, and the yellow wire is +12 V.
http://en.wikipedia.org/wiki/Computer_power_supply

 

So... where do I hook the orange wire?

 

Usually, if you have a Rail plug, or Fan plug, that is the only way to hook up the Orange. Personally, I would get one of these http://www.newegg.com/Product/Product.aspx?Item=N82E16812104652 And from the looks of it, you do not need the Orange, due to all that is used is the Red, Black, and Yellow.
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&DEPA=0&Description=sata+power+adapter

 

I thought about ordering one, but it would cot 3 times the price to ship it, and I wouildn't have it until next week. You are right, it doesn't look like you need the orange, but I'd rather be double sure, ya know?

 

Look at your existing connector. Is the orange hooked up now? If not, that means that it is not used, due to drives do not need the 3.3v.

 

On most of the PSUs I have, yes, the orange wire comes from the PSU itself to the SATA plug. But the adapters only show 4 wires, leading me to believe that either a) they don't use it, or b) they hook up one of the other wires in it's place, but you just can't see it.

 

If you hook 5v into the 3.3v lead, it will blow the device. You are thinking into it way too much. Click on the image, and you will see that only four leads are used.

 

I've tried not thinking too much, and that seems to cause way more problems

I just can't understand why it has the extra wire if it isn't needed, ya know? I just got this machine up and running after two months, and would really hate to blow it up... like hooking a wrong wire up.

 

other than the molex to sata converter, you could just get an sata splitter.. these are relitively cheap also..