MAX Adapter 5G @ Balance 20X -> SIM Card not selectable

Hello,

I’ve noticed, that I cannot choose the SIM card slot on my MAX Adapter 5G via the web GUI of my B20x.

Is there a chance that the MAX Adapter behave the same way like an internal 5G / 4G modem, where I can select
the simcard slot and dial in an auto selection by signal strengh?

Thank you!

Denny