Yes you can, see below picture (stolen from @Johnex :slight_smile: )

PCI-E modem on the left with the two antennae wires.

Best would be the “new” global modem EG25-G .

Think you need to talk to the Gl.iNet guys to get hold of but I do note it’s on their Gl.iNet shop now.

Be careful when swapping out, the uFl connectors for the antennae are delicate :slight_smile: