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 Ryzen 7 How To Upgrade M.2 Pcie Nvme SSD Disassembly - YouTube
Lenovo - ThinkPad L15 Gen 3 i7-1255U Portátil 39,6 cm (15.6") Full HD Intel® Core™ i7 16 GB DDR4-SDRAM 512 GB SSD Wi-Fi 6 (802.1