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<blockquote data-quote="michelangelo" data-source="post: 1893804" data-attributes="member: 54225">Hello. Having more than one device powered by my UPS, I seek the manner in which an old iMac running my home automation software and used as server will have a safe shutdown after having received the UPS information and instructions from a Network UPS Tool (NUT) Server. My NUT server could be a raspberry Pi correctly configured, or simply my pfSense router, as pfSense is out of the box NUT-compatible (and demands a safe shutdown). On the mac app store, I can find the client that I need, but this client is only compatible with MacOS 10.15 Catalina. My server uses an old iMac only capable of 10.13 High Sierra.Otherwise, I have found very old UPS installations of NUT (like macOSX 10.4) too old for my mac. Are there other alternatives, like configuring the mac as a master (rather than a slave) or using a USB Switch to feed both devices with the information feed.Thank you for any pointers (including pointers to a specialised forum if needed). (UPS: Eaton 3S; firewall: pfSense on freeBSD; Server iMasc 2011 running on macOS 10?13)</blockquote>

[QUOTE="michelangelo, post: 1893804, member: 54225"] Hello. Having more than one device powered by my UPS, I seek the manner in which an old iMac running my home automation software and used as server will have a safe shutdown after having received the UPS information and instructions from a Network UPS Tool (NUT) Server. My NUT server could be a raspberry Pi correctly configured, or simply my pfSense router, as pfSense is out of the box NUT-compatible (and demands a safe shutdown). On the mac app store, I can find the client that I need, but this client is only compatible with MacOS 10.15 Catalina. My server uses an old iMac only capable of 10.13 High Sierra.Otherwise, I have found very old UPS installations of NUT (like macOSX 10.4) too old for my mac. Are there other alternatives, like configuring the mac as a master (rather than a slave) or using a USB Switch to feed both devices with the information feed. Thank you for any pointers (including pointers to a specialised forum if needed). (UPS: Eaton 3S; firewall: pfSense on freeBSD; Server iMasc 2011 running on macOS 10?13) [/QUOTE]

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