Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Interruptible

I purchased two of these for my house, which very often gets brownouts, and one seems to work fine, supporting a NAS, a DVR, a router, and a cable modem.The other one though is simply unable to keep a desktop PC from interrupting when the voltage drops for less than a second. This makes no sense, because even when I get an outage, the PC resets (right at the moment of power interruption) and then it keeps working from the battery!