8GB DDR3L Low Voltage 1600 MHz (PC3-12800) CL11 SODIMM Memory - Notebook RAM - VisionTek | Dell USA
SAMSUNG Memory 8GB 2Rx8 PC3L-12800S-11-13-F3 RAM M471B1G73EB0-YK0 at Amazon.com
OWC 8GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Module Upgrade Compatible with iMac, Mac Mini, and MacBook Pro (OWC1600DDR3S8GB) at Amazon.com