Protects computer against power sags or power outages.
It is a big battery that provides AC power to your computer regardless of power coming from the AC outlet.
Used:
- As backup power for temporary power loss
- To shut down the host machine of a VM server gracefully. The perfect power is measured in Watts or Volt Amps (VA). VA will always be higher than the Watt rating, as there is no effective way to predict the wattage each consumer has.
UPS Selector
https://www.apc.com/us/en/country-selector/?ref_url=/ Make sure you get a UPS with ethernet or USB, so that you can monitor them