Silicon Power Hynix IC Compatible for Apple DDR3 DDR3L 16GB (2 x 8GB) RAM 1600MHz (PC3 12800) 204 pin CL11 1.35V Non ECC Unbuffered SODIMM Laptop Notebook Memory RAM Module Upgrade 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
4GB 1600MHZ Low Voltage MOD at Amazon.com
VisionTek 8GB DDR3L Low Voltage 1600 MHz (PC3-12800) CL11 SODIMM, Notebook Memory - 900642 at Amazon.com