I like that it dosen't have a bright light. I can see what people mean about the noise of the fan. I put it on to charge in the morning and the fan was still going 13 hours later when I went to bed. But when I got up in the morning it was off and haven't heard it since. The UPS lives under a desk in our lounge/dining room so I've been putting off this review to see if I was going to return it. But 3 weeks later its staying where is. I haven't connected the USB control so can't comment on that.

The cooling fan was very loud and made the desk vibrate. In a quiet office or bedroom or if you need to concentrate don’t buy this brand

Great little UPS for a small office or network room but no good for a home office as the cooling fan is too noisy for a confined space. Otherwise there is nothing wrong with it.

It seems to do the trick

Yeah, that fan, it goes and goes for hours. This is due to the batteries being near death. Otherwise it does what an UPS is meant to do.