What Is a UPS and How to Choose One for a PC, Router or NAS
A UPS is a battery backup for the devices you do not want to lose instantly when the power flickers or goes out. For a home setup, that usually means one of four things: keep the internet alive, give a PC time to save and shut down, let a NAS stop cleanly, or protect a workstation from short brownouts. The mistake is buying by the biggest VA number on the box. A useful UPS choice starts with a smaller question: what exactly needs to stay on, and for how long? ...
