The CDL-02POWER is a type A male to type A female extension cable with only the + and - power pins connected. This is extension for charging devices like ipods, iphones, Sat Navsetc. It allows you connect the appropriate device cable andcharge the device through your USB port on your PC/Laptop with out opening up your webstore, itunesetc. While a device cable has data and power only the power from the extension is carried through.