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Power 2.5" drive with USB or fan power

I need some advice on how to power a 2.5" drive inside some Intel 1U servers I have. I'm annoyed because the small power supplies can only power three drives (three drive bays / caddies in the front) and the motherboard has three unused sata plugs free. I'd like to use one of these to power a 2.5" sata drive that will rest inside for linux to setup a software raid on the other three drives.

Is their some way I can split a cable to get the necessary voltage / wattage for a small drive from the many 4 pin fan plugs that are free or maybe even the USB plugs. I've seen the 2.5" drive on a PCI-x card solution but I'd rather not go that route.
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  1. Best answer
    Why not look up for a SATA Power Splitter, and split one of the three power cables for the other drives to feed the 2.5" drive? I would NOT mess with the 4 pin fan plugs, and you can cludge unnecessarily a USB powered connection, but I seen SATA Power splitters before.
  2. Tom Tancredi said:
    Why not look up for a SATA Power Splitter, and split one of the three power cables for the other drives to feed the 2.5" drive? I would NOT mess with the 4 pin fan plugs, and you can cludge unnecessarily a USB powered connection, but I seen SATA Power splitters before.


    Thanks, Tom. This will be a good solution for my 1U Dell server since adding a 2.5" drive won't be much of an additional load on the power supply, but my old Intel servers have those hot swapable drives on the front (SR1500AL) which means there are no power cables just an interface it slides into directly on the motherboard. Yes, there are seperate sata connectors on the board but not the 15-pin sata power connectors. Maybe there are some PCI-E cards that can provide an extra Molex or Sata power plug. There's also this USB to 15pin sata. I'm also considering just installing Centos / FreeNAS to a USB thumb drive to permit me to control the three disk software raid (raid5) on the three front drives.
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