Apparently T480s can boot directly from WWAN Slot! : r/thinkpad
Solved: mSATA SSD in WWAN slot in e7240 - Dell Community
SanDisk 512GB NVME disk in T480 WWAN slot - Test results : r/thinkpad
Solved: mSATA SSD in WWAN slot in e7240 - Dell Community
Converter module socket M.2 NGFF B-Key to nano-SIM WWAN SSD SATA PCIe-NVMe card - Cablematic
Solved: mSATA SSD in WWAN slot in e7240 - Dell Community
Dell Latitude E7440 – Using a MSATA SSD in the MSATA WWAN Port = Yes, you can! | ComputerComputerComputer
Installing a SSD (mSATA) into a WWAN Slot - YouTube
T470-SSD-in-WWAN-Slot - English Community - LENOVO COMMUNITY
T570 with M2 SSD in WWAN slot. (Works) - Album on Imgur
P53 NVMe SSD in WWAN Slot : r/thinkpad
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
Dell Latitude 5401 - install second SSD into WWAN slot! - YouTube
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
ssd-L570-on-wwan-card-slot-pictures - English Community - LENOVO COMMUNITY
E5570 M2 2242 SSD not working in WWAN slot? - Dell Community
SN530 2242 512gb m.2 SSD for the WWAN slot 50€ : r/Lenovo