Western Digital Scorpio Blue WD7500BPVT-55HXZT3 750GB 2.5" 5400 RPM 8MB Cache SATA2 3GB/s Internal HDD Hard Disk Drive.Model Name: WD7500BPVTWestern Digital Model Number: WD7500BPVT-55HXZT3Specifications:Form Factor: 2.5"Series: Laptop HDDInterface: SATA II, Serial ATA-300 (3.0 GB/s)Cache: 8MBCapacity: 750GBRPM: 5400 RPMHeight: 9.5mm