Lenovo Thinkpad T440s Hard Drive Replacement - iFixit Repair Guide
Amazon.com: Lenovo Thinkpad T440 High Performance Business Laptop, Intel Dual-Core i5-4300U up to 2.9 GHz, 4GB DDR3, 500GB HDD, 14in HD LED-backlit display, WiFi, Windows 10 Pro(Renewed) : Electronics
Lenovo Thinkpad T440s Hard Drive Replacement - iFixit Repair Guide