Inseego FX3100 5G and MIMO, 3G/4G/5G Antenna (6000451) Omnidirectional MIMO by Netgear

I just told my Tmobile for Business Rep that I needed a router that had the ability for an external connection and they you need to tell them what products they have to help them.  It took awhile on the phone to work things out. The first one I got was the Cradlepoint Router 320 but the extra expense for the cloud monitoring and the confusion between Cradlepoint and Tmobile made it impossible to make changes to some settings.  Inseego fx3100 was available too, so I asked them to switch out and they did.

Good Luck