2GB Black Diamond Memory Module for Lenovo ThinkPad R500 2720 DDR3 SO-DIMM 204pin PC3-8500 1066MHz Upgrade - Walmart.com
Lenovo Thinkpad R500 Laptop how to remove RAM and clean - YouTube
Amazon.com: Memoria RAM de 4 GB para Lenovo ThinkPad R500, 7439, de la serie R R400 204Pin PC3 – 8500 1066 MHz Módulo de memoria DDR3 SO-DIMM Upgrade : Electrónica