LENOVO THINKPAD T450S i5-5300U 2.30GHZ 14" 8GB RAM 256GB SSD WIN10 PRO WIFI/BT | Store | Omaha Computing Solutions
Lenovo ThinkPad T450s 14 Inch Business Laptop, Intel Core i5-5300U up to 2.9GHz, 8G DDR3L, 120G SSD, VGA, Mini DP, Win 10 Pro 64 Bit Multi-Language Support English/French/Spanish(Used) - Walmart.com
Amazon.com: Lenovo ThinkPad T450s - 14 Inch - Intel i5-5300U 2.30GHz - 8 GB RAM - 256 GB SSD - Windows 7 Pro - 20BX001AUS : Electronics
Looks like m.2 2280 worked out just fine for t450s : r/thinkpad