Apple MacBook Pro 13" Retina A1502 2.7GHz Core i5 8GB RAM See Description. Computer is in very good condition it has a protective decal over the cover that has had some wear and tear. Computer was working great until I reinstalled sierra operating system and now the Wi-Fi won’t work. this should be an easy fix for someone who knows what they’re doing. Also includes a USB drive with Sierra operating system boot installer.