Does the mid-2012 13 MacBook Pro have an M.2 slot that I can use for an Intel Optane memory upgrade? - Quora
NEW 2TB SSD For Apple MacBook Pro 13" / 15" iMac 21.5" 27" Late 2012 Early 2013 | eBay
Amazon.com: MCE Technologies 500GB Internal SSD Flash Upgrade for 13" and 15" MacBook Pro with Retina Display (Mid 2012 - Early 2013) - Includes Installation Kit! : Electronics
MacBook Pro 13" Retina Display Late 2012 SSD Replacement - iFixit Repair Guide
MacBook Pro 13" Retina Display Late 2012 SSD Replacement - iFixit Repair Guide