This is protection an import linux desktop PC. Once I connected it with an old USB cable (should be included with the product, but is not, you need one of the square ones that printers used to ship with), it was very easy to set up with linux, and now I see the battery level on my PC. I haven't had to use it yet, except to test but the reviews and reputation are good. I will power my PC and one of the monitors for ten minutes, with the machine beginning a shutdown after six minutes, all scripted and automatic in case I am not here when power loss happens. Exactly what I wanted.