The definition of the four pin matte nickel plated straight edge bevel port for the MICRO USB base sink is as follows: the high current flat port for the 0.8 four pin plug of the MICRO USB base sink. 3A High Current MICRO USB Mother Base BF Sink Plate 0.8 Straight Edge Mist Nickel Flat Port Four Pin Plug Board The surface of the hardware shell is electroplated with Mist Nickel. This 3A High Current MICRO USB Mother Base enhances current conductivity. This MICRO USB Mother Base supports input and output of 3.1A current, with a sinking plate shape of 0.8mm and a broken plate. The hardware shell opening is straight edge flat port, and the fixing method is four hook plug boards DIP, thereby enhancing the soldering firmness, With the increase of battery capacity in mobile devices, the traditional 1A current MICRO USB motherboard is no longer able to meet consumers' demand for short charging time. The market urgently needs a larger current output MICRO USB motherboard interface. After all, from the perspective of practicality and cost, the MICRO USB motherboard is more suitable for devices that only support fast charging. Our company also timely launched the 3.1A high current MICRO USB motherboard, Please refer to the PDF specification for relevant electrical performance parameters and appearance structure data.