Seifelden 4GB (2X2GB) Memory RAM for IBM Lenovo G550 Laptop Memory Upgrade - Walmart.com
Lenovo Laptop Intel Core 2 Duo T6600 (2.20GHz) 3GB Memory 320GB HDD Intel GMA 4500MHD 15.6" Windows XP Professional preinstalled with Windows 7 Professional Upgrade Option G550(2958-A4U) - Newegg.com