Lenovo ThinkPad T520 15.6" Laptop Computer Intel i7-2640M 8GB 512GB SSD Windows 10 Pro WiFi - Walmart.com
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
Tuning the Lenovo T520 - Upgrading Memory and Installing an mSATA SSD • Helge Klein