HGST Travelstar Z5K500 320GB 5400RPM 8MB Cache SATA 3.0Gb/s 2.5" Laptop Hard Drive (For DELL, ASUS, IBM, Lenovo, HP, Compaq, Toshiba, Sony Notebook)- w/1 Year Warranty 320GB Capacity Rotation Speed: 5400RPM 8MB Buffer Size Interface: 2.5" SATA 3.0Gb/s Laptop Hard Drive Warranty: 1 Year Warranty from Reseller