M1 Mac RAM and storage can be upgraded after purchase, but it's not easy - 9to5Mac
16-inch MacBook Pro - Space Gray - Apple
Teardown of Retina MacBook Pro finds soldered RAM, proprietary SSD | AppleInsider
MacBook Pro 17" Unibody RAM Replacement - iFixit Repair Guide
MacBook Pro: How to remove or install memory - Apple Support
16GB Memory Upgrade for MacBook Pro, iMac, and Mac mini
Corsair Apple Certified 16 GB (2x8 GB) DDR3 1600MHz (PC3 12800) Laptop Memory 1.35V at Amazon.com
2022 Apple MacBook Pro Laptop with M2 chip: 13-inch Retina Display, 8GB RAM, 512GB SSD Storage, Touch Bar, Backlit Keyboard, FaceTime HD Camera. Works with iPhone and iPad; Space Gray - Walmart.com
How to Upgrade RAM on a 2019 MacBook Pro
Major RAM Upgrade Coming to Next-Generation MacBook Pro - MacRumors
Apple MacBook Pro - 13" - M2 - 8C10C - 16 GB RAM - 1 TB SSD - Space Grey - Z16R-2002141664 - -
13-inch MacBook Late 2009 & 2010 Memory Installation Video - YouTube
How to upgrade the RAM on your 13-inch MacBook Pro
Apple's MacBook Air with 16GB RAM is on sale for $1,099 & in stock | AppleInsider
13-inch MacBook Pro Mid 2009 Memory Installation Video - YouTube
How-To: Boost your Mac's speed and prolong its useful life with easy RAM upgrades - 9to5Mac