MCE Technologies MCE OptiBay - Optical Bay Drive Kit 2nd Hard Disk/SSD Caddy, Add a 2nd Hard Disk or SSD to your Apple MacBook Pro 13", 15", 17" Unibody, and Apple MacBook 13" Unibody Add a second hard drive or SSD (not included) to your Unibody MacBook Pro 13", 15", or 17" with this genuine MCE OptiBay - Optical Bay Drive Kit Includes Illustrated Installation Guide and Installation Tool kit... no extra hardware required Compatible with all Mac OS versions (Including High Sierra, macOS 10.13) and Windows operating systems Includes MCE OptiBay Utility Application which allows you to continue to use the Apple DVD Player application with your external SuperDrive (DVD drive). Toll Free Technical Support. Lifetime Warranty. Hard drive or SSD to be installed in the OptiBay must be 2.5", SATA, 9.5mm in height or less.