Acer Aspire E1-531-2697 - C B820 / 1.7 GHz - Windows 7 Home Premium 64-bit - 4 GB RAM - 320 GB HDD - DVD SuperMulti - 15.6 CineCrystal wide 1366 x 768 / HD - Intel HD Graphics - black at TigerDirect.com
How to upgrade RAM Acer Aspire ES 15 ES1-531 Part 1 - YouTube