Installing MacBook Pro 15" Unibody Mid 2012 Dual Hard Drive - iFixit Repair Guide
SSD Upgrade 128GB 250GB for A1278 A1286 A1297 2010 2011 2012 Macbook Pro 13 15" | eBay
13" & 15" Apple MacBook Pro Retina Late 2012 - E 2013 PCIe 128GB SSD A1425 A1398 | eBay
MCE Technologies 500GB Internal SSD Flash Upgrade for 13" and 15" MacBook Pro with Retina Display (Mid 2012 - Early 2013) - Includes Installation Kit! : Electronics
Certified Refurbished - Apple MacBook Pro Retina 15-Inch Laptop - 2.3Ghz Core i7 / 8GB RAM / 256GB SSD MC975LL/A (Grade B) - Walmart.com
Replace your 2009-2012 MacBook Pro HD with an SSD
Genuine Used Laptop A1425 A1398 SSD 768GB 512GB for Macbook Pro Retina 13" 15" 2012 2013 Year|Laptop Repair Components| - AliExpress