External Serial Advanced Technology Attachment is the external interface variant of the popular SATA technology competing with contemporaries like FireWire 400 and USB 2.0 (and now 3.0 also) in fast data transfer speed segment of external storage devices. It provides serial streamlined flow of data over s serial link rather than the old ATA that used parallel technology and is theoretically capable of triple the speeds of USB 2.0 and FireWire 400. It however requires a dedicated power connector to operate, unlike the other two. It is hence an excellent external storage choice when portability isn’t much of a concern.
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