No matter where you live, power failures and brownouts are unavoidable. When the electricity stops, the Back-UPS Pro 500 lets you keep your Mac and as many as three peripherals going for 20 minutes, long enough to let you save your work and shut down safely. Seven grounded power outlets supply automatic voltage regulation and surge suppression; four of them also provide battery backup. (Unfortunately, you can't plug more than one power transformer into a backup outlet without obsthttp://brickhouse.macpublishing.net/workflow/profile/story/container/edit.html#ructing an adjacent outlet.) If you're running OS 9.0.4 on a Mac with built-in USB, the included control-panel software automatically saves open documents and shuts down your Mac before the battery runs out.