![]() ![]() SCSI Ultra is less common and has a maximum data transfer rate of 320 Mbps. SAS is a common enterprise hard drive connector and features a maximum data transfer rate of six Gbps. The latest iterations of SCSI are Serial Attached SCSI (SAS) and SCSI Ultra. USB 3.0 has a theoretical maximum data transfer rate of five gigabits per second. There have been several major revisions of USB, with USB 3.0 being the latest and fastest. ![]() Universal Serial Bus (USB™)Ī very common connection type for external hard disk drives. It has data transfer rates equivalent to SATA. External SATA boasts sturdier connectors, longer cables, and more stringent power requirements. External SATA (eSATA™)ĮSATA is a variant of SATA that is adapted to the needs of external data storage devices. The last major update, SATA revision 3.0, has a maximum data transfer rate of 600 MBps. There have been three major revisions for SATA, with each improving upon speed and other factors. ![]() Drives that use SATA connectors include optical drives, solid state drives, and hard disk drives. ![]() Short for Serial ATA, it is a common standard for many types of internal data storage devices. It has a major impact on drive performance and compatibility. Interface or connection type refers to the type of data connector used to attach the hard drive to the computer. ![]()
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