Any difference between 4-5 pin SATA power cable?

[Feneant]

Ok... so my brother received a new pc and on it, the sata power cable from the power supply is broken (the plastic top is cut off so it falls when you plug it in- it dangles basically). He does have some molex to sata connectors that work when we try. The only noticeable difference is that the sata power cable from the power supply has a 5th cable, an orange 3.3 volt wire. The other molex -> Sata cables do not have this 5th wire, can we still use it to plug the drive? What is the use of the 5th wire, is it something important we are missing?

This is a Seagate drive so it does not have the molex connector, only the Sata power connector.

Can we use the 4 pin cable safely?

Thanks in advance.

[Canadianpsycho]

Are you talking about using the molex to sata converter? If so, then go right ahead, I have been using a converter on my raptor and seagate SATA drives for a few months without problems.

[Feneant]

This is the power cable right? to power it?

I figure its what will be done, mostly wondering why there is a 5th wire on it.