Used to select the interface to be powered on or off: 1 = internal Ethernet; 2 = CS I/O Interface(1) (NL201 by default); 3 = CS I/O Interface(2) (NL241 by default);4 = internal Wi-Fi; 5 = CS Cell2XX-Series cellular modem. Right-click the parameter to display a drop-down list with the valid options.