Used Lenovo Black ThinkPad T420 14'' PC Laptop Intel i5 Dual Core 2.5GHz 8GB RAM 160GB HDD Intel HD Graphics 4000 1600 x 900 Display Windows 10 Professional 64-Bit - Walmart.com
CMS 16GB (2X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad T420 4177, 4178, 4180, 4236 Series - A13 at Amazon.com