Serie 5S Line‑Interactive UPS 5S550iBS – 550VA 330W Backup Power with AVR, 3× Battery & Surge IEC‑C13 Outlets + 1 Surge‑Only, RJ45 Data Protection, USB Management, BS Cable, Black (B09KNMZM7Z)

Our electrical grid where we live doesn't seem to be partticularly reliable. We often have short powercuts which only last seconds. This has been a nightmare for our electronics with multiple failures.This UPS has worked great and gives me enough time to switch everything off or lasts long enough for the power to come back. It powers a Gateway, Switch, 2 Access points and a Synology NAS. It'll last roughly 30 minutes with these plugged in.It loses a single star for not having an LCD screen on it providing critical information.

A great UPS that is able to power my power hungry computer and monitor for at least fifteen minutes while in heavy use.The software works well too with all the settings you could want though its power estimates seem inaccurate when on the mains.It's main weakness is that it is not quiet. There is a noticeable transformer hum and coil whine even while idle and all the equipment attached powered down. When charging or discharging this gets much louder including a noisy fan.This would not be suitable if you need the room to be quiet. For instance my office doubles as a spare bedroom so I have to shut the ups off entirely when I have guests.I think that if you do any kind of work with music or audio this would also be a problem.But if you can put up with the noise or have a high noise floor already then this is a good choice.

didnt come with bs power cable as advertised, had to buy my own