Crucial 4GB Ddr3 1333 Sodimm 204-pin 1.35V/1.5V for Mac® systems Key Features Compatible with Mac® systems Easy installation Ddr3 modules include lead and halogen-free technology Limited lifetime warranty Compatibility for Mac® systems. Engineered to be compatible with your Mac system, Crucial® memory takes the guesswork out of a memory upgrade. Since Apple systems often have very specific memory requirements, including particular component densities, speeds, and SPD programming specifications, it’s important to buy your memory from people who know Apple computers inside and out. With over a decade of experience manufacturing and developing memory for Apple systems, we make it easy to find memory that’s been designed specifically for your system. Reliability for Mac systems. If you’re an Apple computer user, you probably expect intuitive, reliable performance from your system. We think memory should work the same way, too. For each module we manufacture, we send it through a rigorous testing process to ensure that you’re getting a reliable, high-performance memory solution. Every module that leaves our doors has been extensively tested at the component level for voltage and temperature resistances, signal integrity, and software compatibility. Even better, our modules are lead and halogen-free.** Support for Mac systems. Unsure how to install memory or have an important question about your Apple system? Let our team of experts help! With a tech-savvy team that’s well-versed in Apple systems, we’ll provide the technical support you need — no matter how old your Mac computer gets. From phone support, videos, FAQ articles, and do-it-yourself guides, we’ve got the resources you need to keep your system up to speed. Crucial—quality you can depend on. Crucial is a trusted name when it comes to Dram, and that’s no coincidence. As a brand of Micron, one of the largest manufacturers of Dram in the world, we work with our engineers to design, refine, test, manufacture, and support our extensive line of memory modules. With a product portfolio that includes more than 250,000 different Dram upgrades for more than 50,000 systems, we’ve got one specifically designed for your Mac system. For more than a decade we’ve kept Mac computer owners happy with high-performance memory and outstanding customer service. No matter what type of Mac system you have, we’ve got a compatible solution.