This Transcend SSD from 512GB is perfect for bringing your old MacBook Pro back to life. This SSD offers a high speed 6G/s boost to your system and will make it fly again. SSD drives are not ony laster, they offer more security. The drives are extremely shock proof and can keep your data safe even if they would get a little wet. They work like a flash memory card and have no moving parts like old fashion SATA drives. Another advantages is they consume less energy and help you keep your Mac working longer when on battery. Transcend SSD Drives come with 3 month warranty and and if you need help, we wlll install it for you free of charge.