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
8GB DDR3 SDRAM Memory Module at Amazon.com
Amazon.com: 16GB (2x8GB) DDR3 RAM PC Module kit 1600MHZ, by Integral : Electronics
ADATA 8GB DDR3L/DDR3 1600MHz 204-Pin SODIMM Laptop/Notebook Memory RAM Low Voltage (ADDS1600W8G11-R) at Amazon.com
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16GB (2x8GB) DDR3-1600MHz PC3-12800 2Rx8 SODIMM Laptop Memory by NEMIX RAM at Amazon.com