The R500-PLTE router includes two LTE cellular (paddle) antennas. Attach the antennas to the ports marked MAIN and DIV, as shown below.
Hold the antenna straight and twist the base to thread onto the connector.
Tighten with fingers only (maximum torque not to exceed 4 in-lbs/ .45Nm). Do not over-tighten.
Once the router is mounted and powered on, angle the antennas for optimal signal reception.