Timetec 8GB DDR4 2133MHz PC4-17000 Non-ECC Unbuffered 1.2V CL15 1Rx8 Single Rank 260 Pin SODIMM Laptop Notebook PC Computer Memory RAM Module Upgrade ( 8GB) at Amazon.com
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
SK Hynix 8GB DDR4 1Rx8 PC4-2400T HMA81GS6AFR8N-UH SO-DIMM Laptop RAM Memory at Amazon.com