Since I live a bit away from the big city, there are with us again and again problems with power fluctuations or short power outages. Again and again my PC has been disconnected from the power and I always had a bad feeling about what the hardware was concerned. Thus, needed a UPS, and my choice fell on the ES 700, since I "normal" sockets wanted. Our mail carrier said, "What can get because there bricks?" Yes, that part is pretty hard for the size. Unpack, connect, and off you go. One only has to be clear which devices are connected where, because only 4 ports are "buffered" the other 4 only filtered, so are in a power failure also gone. I have a PC, monitor, router and modem "buffered" at the terminals. Since I like to play World of Warcraft, I was already looking forward to the next power outage, because with an online game, it is particularly annoying when you always "knocked out" the middle of the game. It came as it had to, power failure all dark except my PC incl. Connected devices. The unit has been activated immediately and bypasses the short power failure (about 20 seconds). Supposedly depending peripheral bridging up to 25 min. To be possible. I was able to continue without any problems because the phone line has its own power supply and does not depend on the normal power grid. My connection to the game server and Teamspeak servers are preserved. Can only recommend the device.