Mac RAM upgrade: How to upgrade memory on MacBook Pro & other Macs
MacBook Air RAM Upgrade: What You Need to Know
Memory RAM Upgrades for MacBook Pro (2012 - Late 2016)
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
Is the base MacBook Air M1/8GB powerful enough for you? - 9to5Mac
Corsair Apple Certified 16 GB (2x8 GB) DDR3 1600MHz (PC3 12800) Laptop Memory 1.35V at Amazon.com