8GB 2X 4GB DDR3 Memory for Toshiba Satellite M645-S4050 M645-S4070 PC3-8500 204 pin 1066MHz SODIMM RAM (PARTS-QUICK BRAND) Halogen Free; ROHS Speed: PC3 8500 1066MHz Form Factor: 204 pin SODIMM Capacity: 8GB 2X 4GB Kit Warranty: Lifetime