Select from the drop-down box the type of Z-Wave interface that's connected to the computer. After selecting the interface, click the SAVE button at the bottom of the screen. The columns shown in this screen will appear (Home Network ID, Number of Nodes, Manage, etc.). Click the MANAGE button to learn devices from the selected interface.
If the Z-Wave interface selected uses a serial (COM) port on your computer, enter the port number the interface is connected to in the COM Port: box to the right of the interface selection drop-down list.