So my UPS made a buzzing sound for about 4 or 5 seconds and the

Does it have a serial/USB/network port?

Connect to it and run whatever diagnostics software available.

>>222343
Some UPS are prone to overheating if you're using half of the outlets on appliances that require a lot of power for a long time. The buzzing is the stress of the fan trying to cool the inner workings. If this is the case try to turn a of the connections off or disconnect them when you're not using them because it is a fire hazard.

>>222362
I'll give that a try.

>>222373
I'm only using one outlet, the one my PC's connected to.

Also this is the first time it happened since i got it (beggining of September). Didn't do anything peculiar today either, just turned the PC on and started doing usual work.

Just type in the make and model and search google for a manual, dumbfuck.
Christ, faggots like you can't even find your ass with a mirror and somebody helping you.

>>222405
If you bothered to read, you'd see that I searched for info and found nothing. If you can't suggest any solution then stfu and go waste your time elsewhere.

>>222405

This is a "request" board.

If you just want to insult people go to /pol/ or /tv/.