A:
The splitter's comes with an AC adapter for the amplifier for when there is not any power running through the coaxial cables (like with older homes and simpler cables), but if your coaxial cable sends a charge you would not need to use the AC adapter. You would plug the cable leading from the antenna into the antenna IN port (you wouldn't be able to plug it into where the AC adapter goes anyway it is a completely different connection). If you're not sure if your cable is powering the amplifier look at the splitter, if the red light is lit the amplifier is working and if not you would need to plug it into an outlet using the AC adapter.