1.8" Micro Sata Ssd 128gb For Lenovo Ibm X300 X301 T400s T410s Disk Drive Hdd - Solid State Drives - AliExpress
ThinkPad X301, upgraded, overclocked : r/thinkpad
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
TDK 1.8' Micro-SATA 64GB SLC SSD for ThinkPad X300 X301 - China Slc Ssd and Solid-State Drive price | Made-in-China.com