Rod Duncan said: >What he needs is protection from spikes, brownouts etc. with a >reliable battery UPS system that will automatically kick into battery >mode and then allow a "software controlled shutdown". While there are >lots of battery UPS systems available. (I like Belkin for price >performance) > >What software is available to allow an automatic shutdown in OSX? >Most software is designed to automatically reboot the system and keep >it up and running for servers etc. He just wants to be able to have >it safely shut down from emergency battery power after a >predetermined length of time, such as 20 minutes, if the main power >doesn't return. > >Suggestions for software in OSX for this? I have a Belkin UPS. I've had it for a few years now, and it has been as reliable as a rock. I exclusively used APC UPS's for many years, but when I purchased my last APC UPS I soon realized that APC now leaves off AVR (automatic voltage regulation) on what I would call their consumer-class models ($100 or less). In fact, while using that last APC UPS that I purchased, every time that I turned on my laser printer (which was not attached to the UPS) there was a sag in the power that caused my Macintosh to shut down despite being attached to the APC UPS! I returned the APC and got a Belkin. The Belkin was cheaper, with better specs and features, and it includes AVR, which I consider to be something that a UPS should not be without. Here is the 800VA Belkin UPS for only $88: <http://www.trendsandgadgets.com/product_info.php?products_id=3683&ad=fr100 3683> If you need unattended shutdown software, Belkin has that available for free for OS X, including Panther, for use with their UPS's. Bulldog Plus for OS X <http://web.belkin.com/support/download/download.asp?download=F6C100-UNV&la ng=1&mode=> or http://tinyurl.com/629g7 Randy B. Singer Co-Author of: The Macintosh Bible (4th, 5th and 6th editions) Routine OS X Maintenance and Generic Troubleshooting http://www.macattorney.com/ts.html