USB C connects to the host and Power eSATA connects to the hard drive. Reverse connections are not supported. Provide DC 5V power for power eSATA port. (not power for eSATA port) Support transfer rates up to 5Gbps for fast access to external storage Can connect USB-C-enabled computer or laptop, （e,g for Dell OptiPlex or MacBook ) to SATA drive Can connect any external eSATA hard drive (HDD), solid state drive (SSD), or optical disc drive (ODD) through the USB-C port on your laptop or desktop.