In the world of computing, there are few things less exciting or more necessary than backup, but the uninterruptible power supply is one of them. Just like backup, a UPS can save your data in the event of unexpected problems. A UPS is basically a big battery that will power your PC and connected peripherals in the event of a power failure. Obviously, you don't need to power everything - usually just the PC and monitor is sufficient to allow you to save your work before shutting down. A UPS will usually offer surge protection for devices, such as printers, that don't need to be powered during a cut but could be damaged by an irregular electricity supply.
APC's Back-UPS RS 1000 can power up to six devices during a blackout and also provides surge protection for two more. It talks to the PC via USB, so if a power cut occurs when you're not there it can cleanly shut down the PC.
When we tested it with a 300W PC and 19in monitor attached, it managed to run for 24 min 51 sec before hibernating. When we switched it back on, normal service resumed as if nothing had happened.
APC Back-UPS RS 1000Price: $919
Vendor: American Power Conversion
Phone: 1800 652 725