== Powering Amahi (Fedora 12/14) with APC Back-UPS and [http://www.networkupstools.org/index.html Network UPS Tools (NUT)] ==
The APC Back-UPS ES 550 is a consumer-grade UPS: the software it comes with does not work in Linux. Instead, you need to use NUT or apcupsd. Google will turn up evidence that both work.