I am looking for a new UPS for my Mac Pro, a late 2013 model. I would like to have the following 2 features: 1. Controlled battery powered outlets: I want to shut off the power to external HDs when the Mac Pro is in sleep mode. My current APC BackUPS XS1000 has controlled outlets. But these outlets are only surge protected, but not battery powered. 2. Sinewave output: I can't seem to find one that meets the above two requirements. Any pointer from others?