OWC 8GB (2 x 4GB) PC12800 DDR3L 1600MHz SO-DIMMs Memory Compatible with 2011-2015 iMac, 2011-12 Mac Mini, and 2011-2012 MacBook Pro (Non-Retina Display) Models (OWC1600DDR3S08S) at Amazon.com
OWC 2 x 4.0GB 1600MHz DDR3L SO-DIMM PC12800 204 Pin - For Notebook, Desktop PC - 8 GB (2 x 4GB) - DDR3-1600/PC3-12800 DDR3 SDRAM - 1600 MHz - CL11 - 1.35 V - Non-ECC - 204-pin - SoDIMM - Lifetime Warranty OWC1600DDR3S08S 794504766028
OWC 4GB PC12800 DDR3L 1600MHz SO-DIMM Memory Compatible with 2011-2015 iMac, 2011-12 Mac Mini, and 2011-2012 MacBook Pro (Non-Retina Display) Models (OWC1600DDR3S4GB) at Amazon.com