Macbook Pro SSD Drive Upgrade 128GB Sierra 10.12 2.5 2011 2012 A1278 solid state 619659084141 | eBay
7 Steps: How to Upgrade Your MacBook Pro to an SSD - Wicked Cool Bite
Installing SSD (Solid State Drive) in Your MacBook Pro 13" or 15" Unibody : 24 Steps (with Pictures) - Instructables
Amazon.com: 480GB 2.5" SSD Solid State Drive for Apple MacBook Pro (15-inch, Early 2011) (17-inch, Early 2011) (13-inch, Early 2011) Laptops : Electronics
Apple Original Toshiba SSD 256GB 2.5" SATA 661-5840 THNSNC256GBSJ 655-1653B