8GB Kit (2 x 4GB) DDR3-1066 (PC3-8500) SODIMM DR x8 Memory RAM for Lenovo ThinkPad W500
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
ThinkPad W series - Wikipedia
Lenovo Thinkpad W500 15.4" Intel Core 2 Duo 2.53GHz 8GB 320GB Windows 10 Home DVD Bluetooth
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
8GB (2X4GB) Ram For IBM Lenovo Thinkpad T500, W500 Series DDR3 Notebook Memory | eBay