8GB (1x8GB) DDR3-1600MHz PC3-12800 2Rx8 SODIMM Laptop Memory by NEMIX RAM 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
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
Mushkin Essentials – DDR3 Laptop DRAM – 8GB Memory Single SODIMM – DDR3L- 1600MHz (PC3L-12800) CL-11 – 204-pin 1.35LV Notebook RAM – Low-Voltage – (992038) at Amazon.com
Hynix original 16GB (2 x 8GB), 204-pin SODIMM, DDR3 PC3L-12800, 1600MHz memory module at Amazon.com
TEAMGROUP Elite DDR3L 8GB Single 1600MHz PC3-12800 CL11 Unbuffered Non-ECC 1.35V SODIMM 204-Pin Laptop Notebook PC Computer Memory Module Ram Upgrade - TED3L8G1600C11-S01 at Amazon.com