8GB 2X 4GB PC3-8500 1067MHz DDR3 MEMORY COMPATIBLE WITH APPLE RAM SODIMM 204pin (PARTS-QUICK BRAND) Speed: PC3 8500 1067MHz OR 1066.66MHz Form Factor: 204 pin SODIMM Capacity: 8GB 2 X 4GB Kit Warranty: Lifetime Halogen Free; ROHS