Upgrading a ThinkPad T450s with an M.2 SSD - James Ridgway
How to Clone HDD to SSD in Lenovo Laptop (Bootable)
Used]C: It is , during consecutive holidays □Lenovo/ThinkPad T450S □Comfortable Win10Pro/Core-i7 5,600 U 2.6GHz/SSD:Crucial500GB replacement finished /MM8GB/14 type FullHD/ProDock - BE FORWARD Store
Looks like m.2 2280 worked out just fine for t450s : ThinkPad : r/thinkpad
T450s with SSD replacement - Imgur
How to upgrade the SSD in your Lenovo ThinkPad T490 | Windows Central
Lenovo ThinkPad T450s Disassembly | LaptopUltra
Lenovo Thinkpad T450s Hard Drive Replacement - iFixit Repair Guide