Undoubtedly it’s a very functional USB to eSATA port adapter for those computer savvy geeks who love fresh devices.
Apparently not everybody equipped the latest mainboard with eSATA port. So your enviable eSATA portable external hard drive might be a big fish in a small pond if you can’t use it through your own computer. So it would be better to always carry a USB to eSATA port adaptor.
This adaptor measures 48 x 13 x 27 mm, supports USB 2.0 standard, and costs about $22 USD. If needed, you can get it from GeekStuff4U.