Connect 2.5 & Prime; transfer 7 + 15 pin SATA HDD/SD to computer via USB port to facilitate testing and data transfer.. Provide 2 USB 2.0 type-1 male (y type) and 1 7 + 15pin female sata connector. The Y-type USB cable can support up to 7200rpm SATA HDD or higher.. When the power fails, please connect the additional USB interface to the computer..