4GB DDR3L Low Voltage 1600 MHz (PC3-12800) CL11 SODIMM - Notebook RAM | Dell USA
Samsung ram Memory 4GB (1 x 4GB) DDR3 PC3-12800,1600MHz, 204 PIN, SODIMM for laptops at Amazon.com
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
Kingston Original Ram Memory Ddr3 4gb Pc3-12800 Ddr 3 1600mhz Cl9 For Desktop - Rams - AliExpress