When using Modem communication (No LAN) you need to install a modem into the expansion slots J3 and J31 in the top of the CPU board.
1.Open the SIM card holder (1) on the expansion board and insert the SIM card.
Figure 14, 3/4G Modem EU version front and back
2.Close the SIM card holder
3.Write the subscription telephone number / SIM card number on a label and attach the label, fully legible, inside the cabinet, not on the modem itself because it might be necessary to replace the modem some time.
4.Make sure the antenna is connected to the connector (2)
