Mosiso Plastic Hard Case Cover for Old MacBook Pro 13 Inch with CD-ROM (Model: A1278), Blue and Pink Snap on design, easy on easy off Fully access to all buttons and features Plug your charger, cable or headset without removing the case Super light-weight full protection solution for the exquisite finish to protect your MacBook from scrapes and scratches Start with the top cover of the case. Clip the 2 clips at the back of the MacBook first. Pull the case slightly to the front until the 3 clips &#034;clicking&#034;. Turn around the MacBook. Clip the bottom cover on the back of the MacBook first. Pull the case slightly to the front until the clips &#034;clicking&#034;.