The OWC memory has been specifically designed for compatibility with your Mac. It starts with the highest quality components and then creates memory that meets the high speed, capacity, and programming specifications of nearly all upgradable Apple computers. The result is a JEDEC-compliant memory that is perfect for a faster Mac. OWC memory is hand-tested and quality-checked at every step of the manufacturing process. But that's not all. OWC owns and maintains state-of-the-art facilities where nearly every Mac from the last two decades has been produced. This is because OWC not only tirelessly tests for quality and reliability but also tests in real machines to ensure that OWC memory is optimized to deliver outstanding performance in your Mac for a lifetime.