OFFTEK 2GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R500 Series (DDR3-10600) Laptop Memory at Amazon.com
4GB 2X2GB Memory RAM for Lenovo G555 20045 200pin 800MHz PC2-6400 DDR2 SO-DIMM Black Diamond Memory Module Upgrade - Newegg.com
HOW TO upgrade laptop hard drive to a SSD lenovo thinkpad R500 series + faster boot - YouTube
Available to trade one to one exchange! Lenovo Thinkpad R500 15.4-Inch Black Laptop - Up to 4.5 Hours of Battery Life (Windows 7 Ultimate 64 bit + Office 2013 Activated + Files),
Upgrading the RAM in 3rd Gen X1 Carbon (soldering experiment) : r/thinkpad
OFFTEK 2GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R500 Series (DDR3-10600) Laptop Memory at Amazon.com
Tutorial: Upgrading the Ram on a Lenovo or IBM Thinkpad Laptop (in 1080P!) - YouTube