What is an Uninterruptible Power Supply (UPS) An Uninterruptible Power Supply (or UPS) is a piece of equipment designed to protect your computer in case of power failure.  It resembles a small, but surprisingly heavy box, and it replaces your multi-plug power bar.  It usually has both surge-protection outlets and battery-protected outlets.  In fact, it can act as a battery for your desktop computer for a few minutes during a power loss.  But mainly, it […]