Axiom MB1333/4G-AX memory module 4 GB 1 x 4 GB DDR3 1333 MHz

- Top grade chips and components – Each Axiom memory module is manufactured to meet or exceed OEM specifications. - Fully tested – All memory chips that leave our warehouse are fully tested to guarantee quality and reliability. - Guaranteed compatibility – Axiom guarantees that each system specific chip will work with its corresponding OEM computer. - Lifetime warranty – Once you purchase an Axiom memory chip, you never need to worry about failure because all Axiom memory modules come with a lifetime warranty. - Free unlimited tech support – Speak to a real human being and not a computer message. Tech support is available to every one of our customers via phone or email. Compatible Systems Apple: iMac Intel Core i3/i5 21.5-inch (Mid 2010) Apple: iMac Intel Core i5/i7 21.5-inch (Early 2011) Apple: iMac Intel Core i5/i7 27-inch (Early 2011) Apple: iMac Intel Core i5/i7 27-inch (Mid 2010) Apple: MacBook Pro (DDR3) 13-inch (Early-2011) Apple: MacBook Pro (DDR3) 15-inch (Early-2011) Apple: MacBook Pro (DDR3) 17-inch (Early-2011)