Indigo communicates with Z-Wave, Insteon and X10 devices (like thermostats, locks, appliance or lamp modules) via one of the Z-Wave Controller or PowerLinc Modem interfaces. These controller interfaces are USB devices that connect to your Mac and allow Indigo to both send and receive commands. Without a PowerLinc (or other interface like the CM11) or a Z-Wave Controller, there is obviously no way for Indigo to “hear” or send the commands on the power line or via RF. Therefore, you must have this hardware interface module along with your Indigo. See below for more detail on the various interfaces.
To communicate with BOTH X10 and Insteon compatible devices, Indigo interfaces with the Insteon PowerLinc Modem (2413U), sold seprately. And, to support your Z-Wave devices, Indigo 7 now supports the Z-Stick Gen 5 from Aeon Labs.