Pi add-on offers M.2 for 5G and mini-PCIe for 4G and NB-IoT
Pictured: Intel and Qualcomm to offer 5G Modules for M.2 Slots
1set High Gain 5dbi 5g Antenna Omnidirectional With Sma To Ipex 4 Pigtail Used For Rm500q-gl Simcom Sim8200ea-m2 5g Module - Iot Accessories - AliExpress