Recently updated my early 2014 MacBook Air to Monterey using the OpenCore Patcher. Despite having only 4 GB of RAM, Monterey seems to perform much better than Big Sur did. : r/mac
How to upgrade RAM on a MacBook Air - Quora
SOLVED: Can I upgrade the memory ram in a Mabook Air Early 2014? - MacBook Air 13" Early 2014 - iFixit
MacBook Air 6,2 (13-Inch, Mid 2013 and Early 2014) - Full Info | iGotOffer
Amazon.com: Early-2014 Apple MacBook Air with 1.3GHz Core i5 (13-Inch, 8GB RAM, 256GB) (Renewed) : Electronics
Apple MacBook Air (11-inch, April 2014) review: Apple's 11-inch MacBook Air is now for schools only - CNET
Is Macbook Air 2014 RAM upgrade from 4GB to 8GB possible? - Quora
How to use an NVMe drive to upgrade your Mac's SSD | AppleInsider