Powering a USB3 PCIe Card

[Inojim]

This has already been addressed here, but the ten-dollar USB expansion card I just bought has a 15-pin male SATA power connector, rather than a 4-pin Molex. My Dell 3650 has a spare 6-pin PCIe socket that is nonstandard in that it does, indeed, provide +3.3, +5 and +12. Should I hook 'em all up according to the SATA power pinout standard, or will just +5 and ground do the job? Don't want to run +3.3 or +12 into something that doesn't want to see it, but if the card needs it I can. Thanks!

 

[Inojim]

Finally figured this out for myself. The 15-pin SATA power connector had connections only for +5V and ground. The Dell 6-pin PCIe socket seems to be proprietary, but I found a mating connector, picked up the +5 and ground, and everything works.