It is a very low wattage PSU. I bought it just so I could shut my pc down properly in case of a power outage. I only need it to last a minute or so tops. I do not believe it will last longer then 2 or 3 minutes, but it does depend on the current draw. If all you want to do is shut everything down properly this will work, but if you want to use it to keep your equipment running while the power is out, look for a much bigger PSU.