Crucial CT12864Z40B.K16TY 2GB 2 x 1GB PC3200U DDR 400 Non-ECC Unbuff Memory Kit Manufacturer: Crucial Part Number: CT12864Z40B.K16TY Memory Type: 184 Pin DDR SDRAM Capacity: 2GB 2 x 1GB Bus Type: PC-3200U (DDR 400)