Lenovo Thinkpad T530 laptop computer, 15.6" display, 3.3 GHz Intel Core I5-3220u, 8GB DDR3 RAM, 500GB SATA Hard Drive, Bluetooth, WiFi, HD Webcam, Card Reader, Windows 10 (Reused) - Walmart.com
Upgrade RAM in a ThinkPad X220 - Dodoid's Idiot Proof Guides - YouTube
Lenovo Thinkpad X250 12.5" Ultrabook Business Laptop Computer, Intel Dual-Core i5-5300U Up to 2.9GHz, 8GB RAM, 256GB SSD, WiFi, Bluetooth, USB 3.0, Windows 10 Professional (Reused) - Walmart.com
A-Tech 16GB (2 x 8GB) RAM for Lenovo THINKPAD X220 4294 | DDR3 1600MHz SODIMM PC3-12800 204-Pin Non-ECC Memory Upgrade Kit at Amazon.com