Installing MacBook Pro 13" Unibody Mid 2012 Dual Hard Drive - iFixit Repair Guide
OWC Data Doubler - Replace Mac Optical Drive with an SSD
Black Friday Hard Drive Caddy Tray for Apple Unibody MacBook / MacBook Pro 13 15 17 SuperDrive (Replacement Only) from BrainyTr… | Hard drive caddy, Hdd, Hard drive
How-To: Swap Your iMac, Mac mini or MacBook CD/DVD drive for a super-fast SSD - 9to5Mac
Advice from an Apple Tech: How to replace the optical drive in a Unibody MacBook Pro with a second hard drive
How to Replace MacBook Pro Optical Drive with SSD: EveryMac.com
Install an SSD into the optical superdrive slot on a MacBook Pro | OSXDaily
How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
OWC Data Doubler - Replace Mac Optical Drive with an SSD
How To] Replace An Optical Drive With A Hard Drive Or SSD In A MacBook Pro | macmixing
eSynic Hard Drive Caddy Tray 2.5" 2nd HDD SDD Kit 9.5mm SATA HDD SSD Adapter Optical Bay Drive Slot SuperDrive DVD Drive Replacement Only for MacBook Pro Unibody 13 15 17 | Lazada PH
MacBook Pro 15" Unibody Early 2011 Optical Drive Replacement - iFixit Repair Guide