Do firewire external hard drives require external power supplies? - I'm under the impression that Firewire supplies more voltage (than USB) to the device.
migrated from stackoverflow.com Jul 20 '10 at 3:09
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Depends on the device in question, but Firewire does provide power. I have a 120GB drive that uses the power supplied by either Firewire or USB to work, and has the option of an external power adapter that I'm not doing. Works well.