Can I automatically power down a usb external HDD.
I use an USB external HDD for backup only. I have the backup program scheduled to run at 2 in the morning and the backup takes less than an hour.
So the external HDD needs to be powered up only during that hour.
Is there a utility available that will "spin up" the drive when it is accessed and then "spin down" after an idle time?William Lockie
My ext USB HDD does just that by itself. No need to run any program. CoolGuy
The first thing I would try is advanced settings under your windows' power profile. Then the drive's firmware may be configurable. You can get a utility which will access it. Seatools might, or check with the manufacturer.