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
OFFTEK 1GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad T510 (4349-xxx) (DDR3-8500) Laptop Memory at Amazon.com
How To Upgrade the Ram in a Lenovo ThinkPad - YouTube
Amazon.com: Lenovo ThinkPad T510 Laptop- 320GB HDD, i7-M620 CPU, 4GB RAM, Windows 7 Pro : Electronics