SIM card slots
There are two SIM card slots on the circuit board. If you are only using one SIM, insert it into the primary SIM slot (the slot closer to the top of the product) as shown.
Note For ConnectPort X4 H, the SIM cards slots are on the underside of NEMA enclosure cover. When the cover is opened to insert the SIM card, the primary SIM card slot is the lower of the two slots, and may be difficult to access for inserting the card. Consider using the secondary card slot.
The metal contacts on the SIM card should face down. Insert the chamfered edge first. When properly inserted, the SIM card clicks into place.