this cable only support5 vvoltage， can only berated voltage for led2.5 inch small hard drive IScapable of. will your Sata7pin + 15pin 2.5 built-in harddrive adapter into power connected TO the realization of high speedSATA E-SATA port data transmission， external plug and playsimplicity of use. a cable solve the power and data transmission.this cable only support 5v power supply， therefore only to adapt tothe rated voltage is capable of hard use. this interfacedevice-plastic body in the middle of a tongue， tongue esta is above7 two terminals， and below Is usb A/f of the fourterminal.
this interface can be inserted esata cable end， also can Plug Usba/m cable end， green in this line of cable end of the interface，and at the same time will beE-SATA combine with usbconnector. but can only be used withesata combotheinterface of equipment

here are the top 3.5 inch hard drive wiring diagram，