Crucial 4GB DDR3/DDR3L 1066 MT/s (PC3-8500) SODIMM 204-Pin Memory For Mac – CT4G3S1067M

Increases system performanceCompatible with select Mac systemsAll memory stick modules extensively tested at the component and function levelMeets or exceeds, Apple's quality standards and requirementsEasy installationBrandCrucialSKUB008RW989WModelCT4G3S10