CMS 4GB (1X4GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Ideacentre B320 Series - A25 at Amazon.com
Can-i-upgrade-my-processor - English Community - LENOVO COMUNIDAD
1GB RAM Memory for Lenovo IdeaCentre B Series B320 (Type 7760) 204pin PC3-8500 DDR3 SO-DIMM 1066MHz Black Diamond Memory Module Upgrade System Specific Memory - Newegg.com
4GB DDR3-1600 (PC3-12800) SODIMM Memory RAM for Lenovo IdeaCentre B320