Centon is a member of the Apple Developer Program. Mac memory upgrades are specifically designed for and tested in Apple systems. Centon's DDR2 SODIMM module is built to JEDEC standards and achieves nearly twice the speed of the preceding DDR technology and are for Laptop computers they have 200 pins. Upgrading your pc 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.