Don't be fooled by Belkin's bells and whistles. I deal with a lot of computer equipment that needs surge and battery backup and Belkin is by far the worst. Their products are cheaply made and generally fail after a couple of years of use. On one, I couldn't adjust the Voltage Sensitivity although Belkin Support insisted I could. That unit worked on and off. Before that one gave me problems, I bought a second one which after a couple of years would just shut down on power loss, giving no clue of why. Its the transfer circuit which no doubt is cheaply made. I've taken these units apart and they are crap. They look pretty on the outside and the software brags of all these features but they are so cheaply made as to be completely worthless after a year or so. Buy Tripp Lite, a little more money but a much better investment.