1. How do you use this with IP cams that usually take 12 volts. This unit puts 48 volts through the cable, how is it regulated? 2. Have these units been tested with Gigabit? Or are they limited to 10/100 operation? 3. Can this be used for both 48 volt IP cameras and 24 volt Ubiquiti access points simultaneously? 4. Does the injector need to be connected to router/switch if I only need it to power WiFi PoE security cameras and not transmit data? 5. Will data still pass through injecotr without power? For example, if I lose power to the injector and I plug an AC adapter into my phone, will data pass through?