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What is eSATA?
http://www.softwaretipsandtricks.com/guides/articles/436/1/What-is-eSATA/Page1.html
By Super Admin
Published on 07/2/2011
 
What is eSATA?

What is eSATA?
External SATA is an interface that allows standalone SATA drives to be connected from outside the system. Since the SATA speeds extend to eSATA devices, eSATA offers the highest data transfer rates among all interfaces—namely, USB 2.0 and FireWire—at 3 Gigabits per second (in case of SATA 2).