Has anyone found a LTE-M modem that can be used with a CerboGX? I looked at the Global Link 520 and its an odd critter, extremely limited use cases and almost no functionality based on what their data sheet says, not even GPS. I looked at the GX-LTE-A but its sheet says nothing about LTE-M. AT&T is selling LTE-M unlimited data plans for $30 a Year. (not a month) so that is a compelling option for updating VRM from a CerboGX. -Bill