Installation TypeInternal Hard DriveItem Dimensions L x W x Thickness5.79"L x 4"W x 0.79"ThUnit Count1.0 CountNumber of Items1Item Weight1.2 PoundsHardDrive Size4 TBUPC763649128220ManufacturerSeagate Bare DrivesGlobal Trade Identification Number00763649128220Included ComponentsSeagate 4TB BarraCuda SATA 6Gb/s 256MB Cache 3.5-Inch Internal Hard Drive - Frustration Free Packaging (ST4000DM004)Model NameST4000DMZ04Brand NameSeagateModel NumberST4000DMZ04Hard Disk DescriptionMechanical Hard DiskColor3.5 InchRead Speed190 Megabytes Per SecondMedia Speed4 TBCache Memory Installed Size256Data Transfer Rate190 Megabits Per SecondForm Factor3.5-inchHardware ConnectivitySATA 6.0 Gb/sPackage TypeStandard PackagingHard Disk Form Factor3.5 InchesCompatible DevicesDesktopHard Disk Rotational Speed5400 RPMSpecific Uses For Productbusiness, personalDigital Storage Capacity4 TBHard Disk InterfaceSATA 6 GB/sConnectivity TechnologySATAAdditional FeaturesData Recovery Service