UPS not showing in Energy Saver?

So, I have issues with electricity and my mac mini (Mac OS High Sierra, i7, 2012, 16GB Ram, 120GB SSD), basically every time the electricity stops suddenly, I have extreme difficulties turning it back on.

To solve that problem, I bought njoy 850L UPS and it comes with a software (cd, who has a CD rom these days?!?! I certainly dont). Now, the UPS also comes with a USB port, so it can be connected to your Mac device.

The problem is that I connect it using 2 different USB 2.0 cables and yet, when I go to: Settings > Energy Saver I don't see it "UPS" as an option.

The software they offer is called "viewer port", when I install it, it sort of get stuck in some sort of a configuration but it does open up later, even though it doesnt finish the configuration.

It always get the same error when you run it:

"The Java JAR file “macusbsvr.jar” could not be launched.

Check the console for possible error messages"

On the other side, this is the web browser screenshot. It seems as though the USB doesn't detect it at all???

It's currently connected to my macbook pro and I don't see it listed under USB section.

I don't know what to do really. I need to be able to see it in the Energy Saver section and set the mini to automatically shut down when the UPS battery reaches 30%.

Any ideas??

Mac mini, Mac OS X (10.7.5)

Posted on Jan 26, 2018 3:51 AM

Top-ranking reply

John Galt

Level 10

155,816 points

Posted on Jan 26, 2018 11:32 AM

You are not doing anything wrong. As far as that Mac is concerned, the UPS is simply not present.

You don't need to install any software either. It uses Java which is outdated and just a bad idea anyway. macOS already includes software to recognize the presence of a UPS so you need nothing else. Throw the CD in the trash. Just plug in the UPS's USB cable, and a new UPS tab should appear in Energy Saver.

Since the device does not appear in the USB device tree, nothing is going to happen. Either the USB cable is broken, or the USB port on either the Mini or the UPS is not working, or some combination of those possibilities. Unless you have reason to believe your Mac Mini's USB port is not working, the UPS is probably defective.

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16 replies

LunarWalk Author

Level 1

10 points

Jan 26, 2018 2:23 PM in response to John Galt

Actually, I never had problems with lightenings or electricity in general. The worst thing that usually happens is an outage, but that's in the entire neighborhood. Now, the mini is my problem. That's why I bought it. Main issue is that outages makes it nearly impossible to turn it back on and I don't know why.

Unfortunately, I live in Bulgaria and most services (even apple services) tell me that they don't have parts for their diagnostic tests (which is beyond ridiculous) because "the mini isn't that common in Bulgaria" (which is not true).

I had to give it to a friend of mine, who works in a company with over 100 minis in there. So, an admin there disassembled it, removed the power supply, got another working one from another mini and placed it in mine. It didn't turn on, but then he put the original power supply back in and it started. He said it was stuck or something. I have no idea what that even mean. But there's something happening with the EFI Firmware in my opinion. An outage corrupts the start up and you can't turn it on. It's a nightmare.

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UPS not showing in Energy Saver?