Any disruption in your electric service, such as a blackout, brownout, dropout, spike or surge is not only annoying to your productivity, but potentially harmful to your home office equipment. While surge suppressors are an invaluable tool that no home office should be without, they do not provide the added protection of a UPS. Sure, they can protect against power surges and electrical spikes, but it will still require you to power up all the devices protected by such a device.
Most electronic components in your home office, as well as in your home, require constant power to sustain their functionality. Any disruption will turn the device off. Most do not power themselves back up upon the return of the power, requiring our assistance to do so. Depending on the type of power disruption, as well as the design and sensitivity to power of your equipment, the possibility of damage to critical electrical circuitry exists. This is more common on devices that do power themselves back on after a power outage. For example, a series of power dropouts within seconds of each other, can potentially damage the hard drive on a computer, as I have personally witnessed in more than one occasion.
If you live in areas where temporary power outages are common, or an area where there are excessive thunder storms, a UPS should be on the top of your home office products shopping list. While a UPS may not provide sustained power for more than a few minutes, their ability to keep things running during temporary power disruptions is worth their weight in gold.