OWC 12GB (8GB+4GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit Compatible with iMac, Mac Mini, and MacBook Pro (OWC1600DDR3S12S) at Amazon.com
A-Tech 4GB RAM Replacement for Samsung M471B5173QH0-YK0 | DDR3/DDR3L 1600MHz PC3L-12800 1Rx8 1.35V SODIMM 204-Pin Memory Module at Amazon.com
For SK Hynix 4GB 1RX8 DDR3L 1600MHz PC3L-12800S CL11 SODIMM Laptop RAM Memory #N | eBay
A-Tech 4GB RAM for HP Pavilion 23-p080d | DDR3L 1600MHz PC3-12800 Non ECC SO-DIMM 1.35V - Laptop & Notebook Memory Upgrade Module at Amazon.com