8GB 2X 4GB DDR3 for Apple MacBook Pro 15" inch MC372LL/A 2.53GHz Intel Core i5 PC3-8500 204 pin 1067MHz SODIMM Memory RAM (PARTS-QUICK BRAND) Halogen Free; ROHS Speed: PC3 8500 1067MHz Form Factor: 204 pin SODIMM Capacity: 8GB 2X4GB KIT Warranty: Lifetime