Hynix HMT125U6TFR8C-G7 4GB 2 x 2GB PC3-8500U DDR3 1066 Non-ECC Unbuff Memory Kit Manufacturer: Hynix Part Number: HMT125U6TFR8C-G7 Memory Type: DDR3 SDRAM Capacity: 4GB 2 x 2GB Bus Type: PC3-8500U (1066MHz)