How to Upgrade the RAM on the Lenovo ThinkPad T440s | Laptop Mag
Lenovo ThinkPad T440s Review - Laptop Reviews by MobileTechReview
CMS 16GB (2X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad T440P 20Anxxx; 20Awxxx Notebook - A7 at Amazon.com
Lenovo T440 Hard Drive SSD and RAM removal and upgrade procedures - YouTube
Amazon.com: Lenovo Thinkpad T440 Ultrabook 14in HD LED-backlit High Performance Business Notebook, Intel Core i5-4300U up to 2.9GHz, 8GB RAM, 128GB SSD, USB 3.0, Windows 10 Professional (Renewed) : Electronics