This has worked great at keeping my cable modem up so that I don't loose my network connections. That makes me very happy. With all the storms that we have had that is a big deal.
What can I say. It's like Insurance. You don't need it till you "need it". Simply stated, If you don't have a Tripp Lite battery back up for your PC. Think it over and get one.
Never had a problem with this unit, we've been using this for years on our Ammonia Compressor computer module and it has been solid. I purchased two more for our optic network switches.