Drive PerformanceBuffer: 16 MBMaximum External Data Transfer Rate: 300 MBps (2.3 Gbps)Rotational Speed: 7200 rpmGeneral InformationBrand Name: SeagateManufacturer Part Number: ST9500420ASManufacturer Website Address:www.seagate.comManufacturer: Seagate TechnologyMarketing Information:The Seagate Momentus 7200.4 drive delivers the highest available capacity on a laptop hard drive while satisfying today's need for performance. System builders can count on extending the life of their 7200-RPM laptops by eliminating the need to replace or upgrade due to performance issues.Product Line: MomentusProduct Model: ST9500420ASProduct Name: Momentus 7200.4 ST9500420AS Hard DriveProduct Series: 7200.4Product Type: Hard DriveInterfaces/PortsHard Drive Interface: SATA/300SATA Pin: 7-pinMemoryBuffer: 16 MBPhysical CharacteristicsCompatible Drive Bay Width: 2.5''Depth: 100 mmForm Factor: Plug-in ModuleHeight: 9.50 mmHot Swappable: YesWeight (Approximate): 110 gWidth: 70 mmProduct InformationForm Factor: Plug-in ModuleStorage Capacity: 500 GBWidth: 70 mmStorageBuffer: 16 MBHard Drive Interface: SATA/300Maximum External Data Transfer Rate: 300 MBps (2.3 Gbps)Rotational Speed: 7200 rpmStorage Capacity: 500 GBTechnical InformationBuffer: 16 MBForm Factor: Plug-in ModuleRotational Speed: 7200 rpmStorage Capacity: 500 GB