4GB DDR3-1600 memory module, 1600Mhz, Non-ECC, Unbuffered, 1.35V, 204pin SO-DIMM. Contains a single 4GB SO-DIMM memory module that is specifically designed and SPD configured foryour Mac. This module are compatible with the latestApple Firmware.
Watch our installation video:
Click here for Apple's installation guide.