Amazon.com: Lenovo ThinkPad T420 Business Laptop - Windows 10 Pro - Intel Core i5-2520, 256GB SSD, 16GB RAM, 14.0" HD (1366x768) Anti-Glare Display, ThinkLight Keyboard Light, DVD/CD-RW Drive, VGA : Electronics
16GB KIT (2 x 8GB) for IBM Lenovo ThinkPad T Series T420 T420i T420s T520 T520i. SO-DIMM DDR3 Non-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com