Centon is a member of the Apple Developer Program. Our Mac products are specifically designed for and tested in Apple systems.DDR2 DIMM modules are built to JEDEC standards and achieve nearly twice the speed of the preceding DDR technology. Designed for desktop computers, they have 240 pins and are readily available in multiple capacities.Upgrading your computer is one of the easiest and least expensive ways to maximize your system's performance. Centon's quality memory upgrades are backed by a lifetime warranty and are guaranteed to work with your system.