R550 ODD_PWR Connector

Hi,

I need to install a USB3 card in a R550 server for some RDX backup drives and therefore need to somehow provide additional power to the card via its SATA connector.

Having looked around online I could see other people asking similar question for different server models and I came across mention of people using the ODD_PWR connector if they weren't using it for DVD drive.

Having looked around I have seen all sorts of different variations on cables for other server models but nothing specifically for a R550.

I wasn't sure if the the ODD_PWR connector is a standard pinout or whether it varies by model?

All I need is so that it could potentially provide the necessary power via a SATA/MOLEX cable to the USB card.

If anyone can suggest an appropriate part I would very grateful.

Thanks.