Part Number: 0A28843 (Hitachi travelstar 5k160 120gb 5)Part Number: 0A50509 (Hitachi travelstar 5k160 120gb 5)Part Number: 0A50549 (Hitachi travelstar 5k160 120gb 5)Part Number: 0A50686 (Hitachi travelstar 5k160 120gb 5)Part Number: HTS541612J9SA00 (Hitachi travelstar 5k160 120gb 5)