Seagate Momentus 5400.6 ST9250315AS 250GB 2.5" 5400 RPM 8MB Cache SATA2 3GB/s Internal HDD Hard Disk Drive 9HH132-036 W5D80 0W5D80 CN-0W5D80.Model Name: Momentus 5400.6Seagate Model Number: ST9250315ASSeagate Part Number: 9HH132-036Dell Part Number: W5D80 0W5D80 CN-0W5D80Specifications:Form Factor: 2.5"Series: Laptop HDDInterface: SATA II, Serial ATA-300 (3.0 GB/s)Cache: 8MBCapacity: 250GBRPM: 5400 RPMHeight: 9.5mm