Turning LAN into WAN on Balance X20

Hi, just wanted to find out if this was true or not.

I’d like to have an additional WAN port and have been told that one of the LAN ports can be changed into a WAN port (I’m already using the on Board WAN port + the USB socket as a WAN but would like a third if its possible

That is not possible at this time on the B20x

Many thanks, on a slightly different topic what is the latency tolerance on the B20x, by that i mean if my internal sim and 2nd module are on 4G at 50ms and i add a broadband connection with 4ms will it cope with that (i’m aware that it wont cope with my satellite broadband at 650, but how close does the latency of the connections have to be)