Lenovo ThinkPad T440 m.2 SSD and 2.5" SSD Install (how to + test run) - YouTube
SSD Upgrade for Lenovo ThinkPad T440s 256GB/512GB/1TB/2TB | eBay
Amazon.com: Lenovo ThinkPad T440 14inch Business Laptop Computer, Intel Core i5-4300U Up to 2.9GHz, 8GB RAM, 256GB SSD, Bluetooth, USB 3.0, Windows 10 Professional (Renewed) : Electronics