The Uninterruptible Power Supply (UPS) has long been a safety precaution used for large servers, but several companies have introduced successful lines catering to both the network and desktop markets. The APC Back-UPS Pro USB 500 is a 500VA model that can handle up to 500V/300W of load on its four battery backup/surge protection outlets. The unit also three secondary outlets with only surge protection.
<br>


http://www.hardwarecentral.com/hardw.../reviews/3042/