this post was submitted on 13 Mar 2025
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How can one UPS shutdown more than one device in a power blackout? (old.reddit.com)
submitted 5 months ago by bot@lemmit.online to c/homelab@lemmit.online
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The original was posted on /r/homelab by /u/KiasuGamer0930 on 2025-03-13 10:58:37+00:00.

APC had these smart UPS with a single USB port, to send comms to your device to power it down during a power supply blackout exceeding xx minutes.

Its only work for one device, generally a server or NAS..

But what about both or three device?

How to multiplex these USB comms port?

I am a linux sysadmin, I could write scripts to comms to the devices via ssh, but thats not a idiot-proof solution. Not every device had a CLI shell.

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[–] Bosh_MCCIV@discuss.tchncs.de 1 points 5 months ago

I guess, this is what you are looking for:

NUT