A UPS model that works with Mac Native software to do a graceful shutdown and automatic restart during a power failure.

I've tried 3 UPS's (2 APC and one TripLite) that state they are OSX compatible, however, they do not fully respond to the native osx setting in (system Preferences/ Energy Saver/ UPS/Start up automatically after a power failure). This is what happens:

During a power outage, the OS does a graceful shutdown, but does not reboot when power is restored.

Apparently, the UPS is not notified to turn off during the shut down process. The power (on-Off-On) cycle is required by the mac to restart.

Trip lite tech support says they have software that works with Windows and linux to do this, but not mac.

I've tried two older APC UPS's, One Smart UPS1500 and a Back-UPS 1500 with the same result on two different servers and one iMac.

At this point I'm looking for a make and model of a UPS that does work. If anyone can verify a make and model that actually does this, I'd greatly appreciate it.

Its a simple test, just pull the plug on your UPS, wait for the system to shut down, and then plug the UPS back in. The system should reboot.