So I bought a APC Back-UPS HT 1500, and I was going to install the program it came with to allow it to shut down the computer in a power outage situation, but upon plugging in the USB cable from the unit and starting up my Mac, it immediately recognized that a APC Back-UPS was plugged in and it even place the icon in my menu bar. So my question is this: why does my rig know that this battery system is installed without the use of the software it came with. Does OS X have this feature built in? (If so, color me impressed) I really don't want to install the software it came with, so if I don't need to, I would be happy. (I really have a distaste for redundant installs) Also, I was able to set my 'Energy Settings' to shut down my rig after so many minutes of battery use. It seems to me that this is the same functions described in the software I received with the product. Any opinions and/or insight would really stop my head from spinning right about now.