Need PSU 4 pin to molex adapter...

mcgriffo · 7 Jul 2011 at 09:07

My Dell Optiplex 960's PSU has a spare DC P7 4-pin (female) connector and I think I need to connect this to a newly bought USB 3.0 PCI Card to get the true USB 3.0 speeds (as it is giving me slightly less than USB 2.0 right now).

The card has a typical and standard molex (male) connection port.

Does anyone know where I can get hold of an adapter like this?

Thanks.

paradigm · 7 Jul 2011 at 09:22

Not sure exactly what connector you are talking about. What shape is this connector marked "P7"? And what colour wires does it have?

bedazzled · 7 Jul 2011 at 09:22

Whats wrong with just buying a standard molex splitter cable

Tealc · 7 Jul 2011 at 09:44

Do you mean the Berg floppy connector?

After a little search I found one example of a Male Berg to 4 pin Molex but it was an American site. An in depth search might find something.

You have a few options:-

1) Chop the Berg connector off leaving a bit of wire just in case. Get a Molex extension and chop the relevant connector off, leaving a few cms of wire to work with. Solder black to black, yellow to yellow and red to red. Heatshrink and sleeve.

2) Buy a 4 pin PWM fan extension cable. Remove the shroud off the pinned end, just leaving the bare pin header and shove that in the Berg connector. Then chop the other end off and wire up to a Molex making sure the continuity is correct.

3) Get a different card, some of them have the Berg connector connection.

paradigm · 7 Jul 2011 at 09:48

I have, but only 2-pin for fans.

mcgriffo · 7 Jul 2011 at 09:59

Thanks for the responses.

It looks exactly like that Berg floppy picture - wires are yellow and red with two black in the middle. I assumed that would be my only option as it is the only free connector sticking out of the PSU?

How would the standard molex splitter work?

_SBradley_ · 7 Jul 2011 at 10:02

mcgriffo said:
How would the standard molex splitter work?

Exactly how it sounds: it splits the power cable into two.

OcUK sells Akasa splitters for £2. You can even get dayglo coloured ones, if you're into that sort of thing.

Tealc · 7 Jul 2011 at 10:10

Does the PSU even have a Molex connector? If not then those splitters won't work.

Having a look on eBay at the auctions there seem to only have a ATX connector, a 4 pin and a Sata connector and a black connector with 2 wires going to it, which coincidentally doesn't look much like a Berg connector.

Looks almost proprietary to me.

The plot thickens.

How about a quick picture of this mysterious connector?

Edit: Just noticed you said this

It looks exactly like that Berg floppy picture - wires are yellow and red with two black in the middle.

Maybe the ebay ones are different to yours then.

mcgriffo · 7 Jul 2011 at 10:26

I actually can't see any molex connectors either.... surely it doesn't mean I have no options to power my card :mad:

http://imageshack.us/photo/my-images/849/img0168zs.jpg/

_SBradley_ · 7 Jul 2011 at 10:44

OK. So, presumably, the HDD uses a SATA power connector. In which case, you're going to need one of these, followed by one of these.

(You may be able to get a SATA-to-SATA+MOLEX splitter, but I don't see one on OcUK.)

mcgriffo · 7 Jul 2011 at 10:57

ah.... i see.... now we are getting somewhere....

...could i split off the SATA power connectors to my optical drives too?

_SBradley_ · 7 Jul 2011 at 11:06

mcgriffo said:
...could i split off the SATA power connectors to my optical drives too?

Sure. Take it from wherever's most convenient.

mcgriffo · 7 Jul 2011 at 11:11

Ordering now - thanks a lot for your help

Tealc · 7 Jul 2011 at 12:49

That's much easier than fiddling about with soldering and stuff.....but not so much fun.