Dell Latitude 5401 - install second SSD into WWAN slot! - YouTube
E7390 SSD in WWAN port - Dell Community
NGFF (M.2) WWAN/LTE/3G/4G/5G to Mini-PCIe module (internal, with SIM-slot) [ 3G / 4G / 5G / GPS ]
Converter module socket M.2 NGFF B-Key to nano-SIM WWAN SSD SATA PCIe-NVMe card - Cablematic
Does the Dell Latitude M.2 WWAN socket have the SATA interface on it? – Matt's Tech Pages
Converter module socket M.2 NGFF B-Key to nano-SIM WWAN SSD SATA PCIe-NVMe card - Cablematic
Ngff M.2 Key B To Usb 3.0 Adapter Expansion Card With Sim 8pin Card Slot For Wwan/lte 3g/4g/5g Module Support 3042/3052 M.2 Ssd - Pc Hardware Cables & Adapters - AliExpress
M.2 NGFF Key B to Mini PCI-E Adapter for WWAN, CDMA,LTE, GPS Card : Electronics