How to make your MacBook Pro faster – upgrading a MacBook Pro mid-2012 to SSD and more RAM memory - Webdesign Blog by Andreas Stricker
Timetec Hynix IC 8GB Compatible for Apple DDR3L 1600MHz PC3L-12800 SODIMM Memory Upgrade for Early/Mid/Late 2011, Mid/Late 2012, Early/Late 2013, Late 2014, Mid 2015 MacBook Pro, iMac, Mac Mini (8GB) : Amazon.co.uk:
Memory Upgrade for MacBook Pro Late 2012 - YouTube
16GB MacBook Pro RAM Upgrade (2011/2012/2013) - YouTube
Memory RAM Upgrade for Apple MacBook Pro 13-inch Mid 2012 4GB DDR3 SODIMM | eBay