Network UPS Tools (NUT) For USB UPSs On CentOS 5.5This tutorial shows how to configure and use Network UPS Tools (NUT) software with an USB (Uninterruptible Power Supply) on CentOS 5.5. NUT is a software which supports several thousand models. To check if your UPS is supported, this is the link to the HCL: http://www.networkupstools.org/stable-hcl.html Install NUT dependencies: yum install net-snm