Tutorial: Upgrading the Ram on a Lenovo or IBM Thinkpad Laptop (in 1080P!) - YouTube
8GB (2X4GB) Ram For IBM Lenovo Thinkpad T500, W500 Series DDR3 Notebook Memory | eBay
8GB (4GBx2) Team High Performance Memory RAM Upgrade For Lenovo ThinkPad T510 Series W500 Series Laptop. The Memory Kit comes with Life Time Warranty. at Amazon.com
8GB 2 X 4GB Memory Compatible for Lenovo ThinkPad W500, W510, W700, W700ds, W701, W701ds - DDR3 SODIMM 1066MHz PC3-8500 204 pin RAM (PARTS-QUICK Brand) at Amazon.com
4GB Upgrade for a Lenovo ThinkPad W500 Series System (DDR3 PC3-12800, Non-ECC, ) at Amazon.com