Asus X55C DDR3 SODIMM Memory Replacement - iFixit Repair Guide
CMS 8GB (1X8GB) DDR3 12800 1600MHz NON ECC SODIMM Memory Ram Upgrade Compatible with Asus/Asmobile® X Series Notebook X55A, X555Lp, X555Ln - A8 System Specific Memory - Newegg.com
Computer memory 8GB DDR3 - Asus X55A-SX208D RAM buy