I have an APC ups for my two via Ubuntu servers, adsl, switch, etc for two years now and it works perfectly. I had many problems before because there where power drops and the via servers behaved abnormally after that. Now everything is very stable. We had a one hour power cut this summer (very exceptionnal) and everything worked perfectly. Both servers shutdown automatically after 30min, though they could hold 1hour (I tested). They automatically rebooted when the current was back.It has USB plug and looks like a big fat multiplug connector. It wasn't very expensive. I had one of another make before and it was sh*.