How to upgrade the SSD in your Lenovo ThinkPad X390 | Windows Central
Lenovo ThinkPad X1 Carbon Gen 11 14" Touch-Screen Laptop Intel Core i7 with 32GB Memory 1TB SSD 21HM000RUS - Best Buy
1 PC M.2 NGFF SSD to for Lenovo ThinkPad X1 Carbon 20+6pin 26Pin SSD Adapter Board Card for PC Accessories - AliExpress
Rent Lenovo ThinkPad E14 Gen 2 14" Laptop - Intel® Core™ i7-1165G7 - 8GB - 512GB SSD - Intel® Iris® Xe Graphics from $29.90 per month
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