Macbook Pro 13" Retina A1502 Take Apart (2014 Model) - YouTube
M1 Mac RAM and storage can be upgraded after purchase, but it's not easy - 9to5Mac
Amazon.com: RUBAN Case Compatible with MacBook Pro 15 inch 2011 2010 2009 Release A1286, Plastic Hard Case Shell and Keyboard Cover for Older Version MacBook Pro 15 Inch with CD-ROM - Turquoise : Electronics
MacBook Pro 13" early 2015 EMC 2835 - used original spareparts for Macs
MacBook Pro (Retina, 13-inch, Mid 2014) - Technical Specifications
How to upgrade the RAM on your 13-inch MacBook Pro