Antenna connectors on the board of GL-MT300N V2

Hi,
I want to add an external antenna to my GL-MT300N V2. I have a pigtail connector with a IPEX connector and rp-sma connector on the other end.
I saw that on the board there are two IPEX antenna connectors: COM1 and COM2. I was wondering which one is for which interface.

Thank you!