How to Upgrade a Mid 2012 15" MacBook Pro - New RAM - New SSD! - YouTube
Works fluidly on MacBook Pro mid 2012 non retina. : r/BigSurPatcher
So I assembled a Specced Out Unibody MacBook Pro 15-inch (mid-2012, 2.6GHz Core i7, 16GB 1600MHz DDR3 RAM) and installed some gradient colored backlight keyboard on it… : r/mac
Now Here's a MacBook Pro That's Easy to Repair | WIRED
16GB 8GB 4GB DDR3 1600MHz RAM for Apple MacBook Pro Mid 2012 sodimm Memory lot | eBay