8GB Kit 2 X 4GB Memory Module for Apple MacBook Pro 13-inch (Mid 2012) 1600MHz DDR3 (PC3-12800) (PARTS-QUICK BRAND) Capacity: 8GB Kit 2 X 4GB Speed: PC3 12800 1600MHz Form Factor: 204 pin SODIMM Halogen Free; ROHS; Warranty: Lifetime