NGFF (M.2) WWAN/LTE/3G/4G/5G to Mini-PCIe module (internal, with SIM-slot) [ 3G / 4G / 5G / GPS ]
4G LTE Internal Modem Card MDG200-M2 - Protectli
M.2 Adapter With Enclosure (without Modem) Wifi Type C Antenna For All M.2 4g Modem As Em7455 Em7565 Em06 Em12-g Em7430 Me906 - Modems & Gateways - AliExpress
M2MU2 (M.2 (NGFF) to mini PCI-E Adapter)
UN32A M.2 B Key 5G / 4G / LTE Card to USB 3.0 Adapter - M-FACTORS Storage
M.2 NGFF B Key to Mini PCI-E Adapter Converter Card with SIM Card Slot for Quectel, Sierra Wireless modem or SIMCom by wodaplug.com, Size 3042, USB 3.0 supported