Which PSU connector for a PCIe card on the Dell Studio XPS 9100?

dg27 · Feb 20, 2016

I am planning to add a USB 3.0 PCIe card to my Dell Studio XPS 9100.

Rosewill Up to 5.0 Gbps, 4 Port USB 3.0, PCI Express to USB Add-On Card (RC-508)

Which connector to the PSU would I use for power? Based on the reviews I suspect that this might have a molex, but there are no molex connectors on my PSU.

(The description says it uses a "Built-in 4-pin power connector for receiving extra power supply from system.")

Here is what I know about my PSU (which I do not want to replace):

Dell V4NC2 Studio XPS 9100 Power Supply 525W H525AF-01 D525A002L

1x 24-pin ATX Power Connector
1x 8-pin ATX Power Connector
5x SATA Power Connectors
2x 6-pin PCI Power Connectors
1x 2-pin PCI Power Connectors
1x Floppy Power Connector

Model: H525AF-01
Max power: 525W

I currently use the five SATA connectors and one of the 6-pin PCI power connectors (for the GPU).

I really don't know what the others are for. I have unused ones labeled P9 (black 6-pin), P10 (black 2-pin), and a flat white one labeled P11.

dg

KLawinger · Feb 20, 2016

I believe by 4 pin, they arent talking about molex. Although i believe you can get a pcie 3.0 expansion card that does not require additional power and can draw from the pcie slot

dg27 · Feb 20, 2016

KLawinger :

All of the PCIe USB cards I've seen do have a power connector.

One of the Amazon comments for this one reads:

"The white connector is a molex connector that can be found on your power supply and it is used to provide power to the card."

I have two optical drives, 1 SSD and two data HDDs (so I'm using all of the SATA connectors from the PSU).

I'm wondering whether I can use a SATA splitter:

StarTech.com PYO2SATA 6in SATA Power Y Splitter Cable Adapter - M/F

and then a SATA to Molex:

StarTech LP4SATAFM6IN 6-Inch SATA to LP4 Power Cable Adapter - F/M

I'd put my Blu-Ray drive (which I rarely use) on the SATA connection that's split.

Does this make sense?

KLawinger · Feb 20, 2016

that should be fine, although i have no idea how much power a bluray drive uses so it might not go so well

dg27 · Feb 20, 2016

KLawinger :

I've read it's 25-30 W during load:

Power Consumption of PC Components in Watts

and 1.5 to 5 W when idle.

KLawinger · Feb 20, 2016

dg27 :

then that should definitly be fine, go ahead and use the splitter/molex. be sure to buy decent cables though to prevent shorts

dg27 · Feb 20, 2016

KLawinger :

dg27 :

then that should definitly be fine, go ahead and use the splitter/molex. be sure to buy decent cables though to prevent shorts

Great--thanks for confirming.

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Which PSU connector for a PCIe card on the Dell Studio XPS 9100?

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