Kurt Bechstein wrote: >>I have apcupsd on CentOS 3.3 that installed and works without issues. >> >>BK > > > You are doing monitoring via USB rather than serial correct? > Some snippets from my config: # defines the type of cable that you have. UPSCABLE usb DEVICE /dev/usb/hiddev0 [root at server1 root]# cat /etc/redhat-release CentOS release 3.3 (final) So, in a word, yes.