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- Two power supplies in one machine 3 answers
I have an old Pentium-M based Shuttle PC that is great as a backup NAS solution at home, where I prefer low power consumption over speed.
It only has two SATA ports. However it has a PCI slot and I have a 4-port PCI card.
So my plan is this:
- Put the Pentium-M, PCI card, etc. into a case and let it use its native power supply (which is an external brick)
- Install a second 450W power supply in the case and use it to power 4 SATA disks. Their SATA connectors would then plug into the PCI SATA card.
To be clear...the second 450W would not be plugged into the Pentium-M's motherboard Only the HDD power (and maybe some fans).
However...would the second 450W power supply actually spin up? If I power it on, would it supply power to the hard drives, or does it need to be plugged into a motherboard to actually provide juice?