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Robert4

macrumors 6502a
Original poster
Hello,

Have an iMac.

When, after no usage for a while, I have programmed the iMac to "go to sleep," do any other
external HD's I have plugged into a USB port (for backups, etc.) also turn off ?

Fully ?

Thanks,
Bob
 
Screen Shot 2019-04-26 at 10.16.42 AM.png

Check the box here and they will sleep.
 
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