A-Tech 4GB Module for Samsung NP300E5C-A07US Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS364293B12034X1) at Amazon.com
RAM Upgrade on Samsung Series 3 Notebook NP300E5A-A02UB - YouTube
Samsung Series 3 NP300e5c (Chilean market) with Windows 7 Starter, and originally purchased at a department store called Falabella. Imported to the USA by me in January 2020. : r/laptops