iMac not detecting UPS through USB-C cable

Question

iMac not detecting UPS through USB-C cable

Called company that checked - iMac not detecting UPS through Cable (via Thunderbolt USB-C port on back - port ok). Suggested buying USB-B (UPS device connection) to USB-C direct instead of USB A to C converter. Still not working.

UPS works but can't check status of device etc.

Ideas?

[Re-Titled by Moderator]

Original Title: New iMac. Plugged into UPS (CyberPower, SL750U).Connected UPS to iMac with old cable and new adapter (USB-A to USB-C). Installed PowerPanel Personal Software for Mac. Not detecting UPS. Bought new cable with USB-C (to USB-B on UPS). No luck.

iMac (M4)

Posted on Jul 18, 2025 3:17 PM

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Answer 1

kaz-k

Level 9

51,078 points

Jul 18, 2025 5:07 PM in response to markfromplainview

Hi,

Did you try to restart up the iMac?

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Answer 2

kaz-k

Level 9

51,078 points

Jul 18, 2025 7:36 PM in response to markfromplainview

I'V been using APC UPS with Mac Pro which requires connection by USB-A to detect UPS by Mac. There is no required driver or utilities, just connect AC and USB-A for a Mac.

I just wonder what software you installed on your iMac.

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Answer 3

Jul 18, 2025 8:01 PM in response to kaz-k

On my old (recent) iMac, i connected the CyberPower UPS to the USB-A. It worked. New iMac has no USB-A. Only USB-C. Software I installed is PowerPanel Personal for IOS (Mac) - different than whatever the old Mac used. Not working to connect/recognize the UPS when connected through the USB-C on the iMac. Spoke to company which said needs to be direct connection (not through converter which I had tried) - bought new cord to connect through USB-C but iMac still not detecting UPS. Shut down both UPS and Mac. Restarted. Still not working.

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Answer 4

Jul 18, 2025 5:21 PM in response to kaz-k

Yes - more than once. Did not help.

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