OWC 8GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Module Upgrade Compatible with iMac, Mac Mini, and MacBook Pro (OWC1600DDR3S8GB) 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