Which antenna to use with a RUTX50?

Hi,
I finally chose the XPOL-1-5G 4x4 MIMO.
For the moment on a temporary support (photo tripod), I am looking for how to connect the 4 SMA connectors.
So I have the cell1 MAIN cell1 AUX and cell2 MAIN cell2 AUX connectors.
As the connectors are not identified on the RUTX50, I searched but found confusing information.
If anyone could help me…