Install an SSD into the optical superdrive slot on a MacBook Pro | OSXDaily
Apple MacBook Pro 13" Late 2011 Core i7 2.8GHz 8GB 256GB SSD DVDRW macOS 10.13 High Sierra - Refresh Computers Online Marketplace | Refurbished Major Brand Computers
OWC SSD Upgrade Kits For MacBook Pro 2011
OWC SSD Upgrade Kits For MacBook Pro 2011
Apple MacBook Pro 2011 (Early) (Late) 13-inch 15-inch 17-inch MacBookPro8,1 MacBookPro8,2 MacBookPro8,3 SSD RAM OSX UPGRADE - ZD Laptop Service Centre