Gives me an external eSata connection.
I have an Intel SSD that I can now connect to my ASUS motherboard using this socket. It works fine. The eSata connection here doesn't supply power but power is available from the USB connectors. I bought an inexpensive cable that combines the eSata for data and the USB for power into one drive SATA connector. For a mechanical drive you would probably need more power from an external power supply.
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