Hi, we have several Chateau LTE18 ax - MikroTik- S53UG+5HaxD2HaxD&EG18-EA.

It comes with two black connected antennas. On the backside there are ant1, ant2 (SMA), ant3 (SMA) and and 4 ports.

I thought two black antennas are for LTE and WiFi has built in antennas but now i am not sure after reading manual.

If i get it correctly two external antennas are for WiFi and an1 and 4 are for WiFi and SMA connector are for external LTE antennas.

If i connect two SMA antennas to ports 2 and 3 like HGO-LTE-W i wold get some better LTE singal?

Thank you.

EDIT: I opened device and black antennas are WiFi antennas. It has 4 built in antennas and two SMA ports are for external LTE antenna.