External HD

Seagate External Hard Disk Drive - 500GB Portable/ DesktopPortableCapacity4 TBDrive TypeExternal Portable Hard DriveInterfaceUSB 3.0 USB 2.0Drive Size2.5 InchesInternal or ExternalExternalWirelessNoNumber of Bays1PC/Mac CompatibilityPC and MacRotations Per Minute (RPM)5400 rpmSoftware IncludedSeagate DashboardMaximum Data Transfer Rate120 MB/s