BEWARE: Lenovo Thinkpad L15 Gen3 SSD is practically un-upgradeable. Laptop comes with 256GB and bigger SSD is too thick to fit. There also goes a cooling plate on top. : r/thinkpad
Lenovo Thinkpad L15 Gen 3 intel i3 1215u 8GB 256GB 15.6" FULL HD IPS - Algiers Algeria
Lenovo ThinkPad L15 Gen 3 Laptop: 12th Gen i5, 16GB RAM, 512GB, FHD, W – GreenGreen Store
🛠️ How to open Lenovo ThinkPad L15 Gen 3 - disassembly and upgrade options - YouTube