Looking for one of these https://www.amazon.com/Cable-Matters-2-Pack-8-Pin-Inches/dp/B01DV1Z428

 

Not quite:
- at the 'black' end I need the socket into which this might plug - i.e. the power cable I have freee already terminates in an identical black plug

- at the 'white' end I need the opposite gender: the ones illustrated are identical to the appearance of the Molex connector on the board.

 

Would this one be better since a six pin not 8 pin.
https://www.amazon.com/2-Pack-Molex...pin+pcie+to+molex&qid=1554488069&s=gateway&sprefix=6+pin+pci&sr=8-1-spons&psc=1

 

Does the card require a 5v pin?

Is so are there extra Sata power leads to use?

Sata to Molex adapter > https://www.amazon.com/2-Pack-Molex...54499766&s=electronics&sprefix=sata+to+molex,electronics,143&sr=1-1-spons&psc=1

 

No, it requires a standard 4 pin Molex connector (I had it working in a similar age DIY computer/case which I have just comprehensively updated).

As I said, the only spare power lead is the one designed to provide 12 v (I assume) to a high-power graphics card (which I don't have).

The device you have referred me to is designed to deliver a power supply to a SATA device from a Molex-based power supply - what I need is the complete opposite at both ends. Or, put it another way, if I had such a Molex-based power supply, I would not need this forum thread!

 

I appears the linked card does use have a 5v pin connected to the pcb.

Are you sure there are no extra Sata power plugs on that supply?

If you have a SSD or seldom used CD/DVD drive you could use a sata power y cable> https://www.amazon.com/Latching-Pow...4&hvtargid=kwd-3149932710&keywords=sata+y+cable&qid=1554577047&s=gateway&sr=8-5

 

If you have a SSD or seldom used CD/DVD drive you could use a sata power y cable> https://www.amazon.com/Latching-Pow...4&hvtargid=kwd-3149932710&keywords=sata+y+cable&qid=1554577047&s=gateway&sr=8-5

OK, that's a good idea: the SATA CD/DVD R/W drive is very rarely used, so, with the Y-connector , plus one of these https://www.amazon.com/dp/B003AI272...uA3CP&pf_rd_r=AXYH317SJRNPXSEZAJJX&pd_rd_r=032701a7-58ba-11e9-8ef0-0b4f280728eb and a Molex to Molex extender cable, I could solve the problem.

 

I know your question had been answered already but just adding that any of those splitters, banana plugs adaptors work fine for video card. I have used a few over the years usually molex to 4 or 6 pin for graphic card. They are 12 volts on those so any type is fine from a molex or sata power cable. I ended up buying a new 750 watt Hydro FSP PSU that had plenty of 6 and 8 pin plugs for cards.

 

It's worth checking whether the USB ports work without the external power connector. Sometimes that connector is only required for the maximum 1A power per port requirement of USB 3.0. The ports may work for 500mA (USB 2.0) per port by pulling enough power from the PCIe bus. This will power a range of items (keyboards, mice, thumb drives) but might no be suitable for full speed charging or larger external hard drives. You may still get the speed of USB 3.0 as long as the device isn't too power hungry.

 

A good suggestion: in fact even USB 2.0 devices are not detected through this card when there is no power supplied to it - even those devices such as external drives inside a powered case.(of which I have a few).