Add any 2 5 hard drive or ssd to your apple mac pro the powder coated aluminum and open design assists in heat dissipation while the blue color not only looks sharp but allows you to tell at a glance which bays contain 2 5 form factor drives installation is a breeze simply attach your 2 5 drive to the bracket using the four included hard drive mounting screws and swap with an existing 3 5 drive tray