Nighthawk AC1900 R7100RG to connect to external antenna Poynting XPOL 002 V3

Hi am i correct in saying that i cannot connect my poynting external antenna to my nightgear router? Is there no way in the software to change two of the existing wifi antenna to become external antennas? If i cannot do this can you recommend your fastest 4g or 5g router to which i can attach my external antenna?

Regards

Peter