Shad,
I have been trying to get my USB ups working unsucessfully. I also noticed NUT and went to their web site. They state that USB support is built in but only on an experimental basis.
I have a "Test Server" that I play with before I use anything on my production server and I also have 3 different UPSes. 1 serial and 2 USB.
I would like to help with this because I have noticed some people discussing USB UPSes. I would like to offer some "testing" so to speak. If I can help, please email me.
Thanks, Paul