A-Tech 4GB Module for ASUS K52F Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS393232B12034X1) at Amazon.com
4GB Team High Performance Memory RAM Upgrade Single Stick For ASUS K52DR K52F K52JB Laptop. The Memory Kit comes with Life Time Warranty. at Amazon .com
A-Tech 4GB RAM for ASUS K52 -BBR5 | DDR3 1333MHz SODIMM PC3-10600 204-Pin Non-ECC Memory Upgrade Module at Amazon.com
8GB KIT 2X 4GB for ASUS ASmobile K Series Notebook K52 K52F K52 K52JB K52 K52JC
Asus K52F-EX1033V 36,62 cm Laptop: Amazon.de: Computer & Accessories