Lot of (3) Lenovo ThinkPad T520 RAM Memory Cover Door w/ Screws 60Y550
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
OFFTEK 4GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad T520 (DDR3-12800) Laptop Memory at Amazon.com
16GB (2 X 8GB) RAM Memory for Lenovo ThinkPad T520 4239, 4240, 4241, 4242, 4243 | eBay