320GB, Seagate, 2.5″ 7200rpm, 16MB SATA-3Gb/s

Capacity: 320GB
Speed: 7,200RPM
Interface Types: SATA
Form Factor: 2.5inx9mm Fits Most laptops
Sector Size: 512 / 512e
Average Seek Time: 2.3 / 2.1
Electrical Interface: SATA 300 – 3.0Gbps
On-Board Cache: 16MB