An uninterruptible power supply (UPS) is like a surge protector with a battery backup. If you experience a power interruption, devices connected to the UPS will stay powered on as long as the battery lasts. This gives you a chance to save your work and shut your devices down properly to prevent data loss. They are invaluable if you ever work from home, as they can prevent you from losing potentially large amounts of work because of a power interruption.
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