Lenovo 8GB DDR4 2400MHz SoDIMM Memory at Amazon.com
Micron Technology MTA4ATF1G64HZ-3G2E1 8GB 3200MHz DDR4 260-Pin SODIMM (PC4-25600) Memory Module for Laptops, Desktop Mini's & All in One's at Amazon.com
Kingston KCP316SD8/8 8gb 1600mhz Sodimm Mem at Amazon.com
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
Axiom 8GB DDR4-2133 SODIMM for HP - P1N54AA, P1N54AT at Amazon.com