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
DRAM Gigastone
Kingston 1x4GB DDR3 PC 1600Mhz RAM Memory Green | Techinn
16GB (2x8GB) DDR3 1600MHz Non-ECC Memory Module | Integral Memory
8GB kit, (2 x 4GB) 240-pin DIMM, DDR3 PC3-10600U,Dual Rank, Non ECC ram Memory Module by Hynix (HMT351U6CFR8C-H9) at Amazon.com
Hynix DDR3 4GB 4096MB PC3-8500u 1066MHz Lodimm Lo-dimm Desktop Memory DRAM 240pin at Amazon.com