The interface shape of microUSB3.0 is flat and wide, with a gap on one side, and the side of the gap can be compatible with interfaces using microUSB2.0. The appearance of the product is made by riveting the hardware shell. The interface has no curling edges, and two small rectangles protrude in the middle, which are attached to the PCB board during welding. There are 10 pin pins at the tail, arranged in five rows, and welded to the PCB SMT board during welding. Each generation of USB design will be compatible with the previous generation's USB interface, otherwise the previous generation's USB interface will not be usable. The Backward compatibility operation of USB 3.0 is as follows. The common A-type USB interface can add contacts without changing the shape of the 2.0 interface. The B-type interface of USB 2.0 and the micro USB interface cannot add more contacts in space due to size problems, so structures are added around the original interface. The 3.0 male connector can be plugged into all interfaces, while the 2.0 wire can only be plugged into the corresponding shape and position. The product uses materials, hardware shell: high-strength stainless steel, plastic body: environmentally friendly and high-temperature resistant LCP plastic, pins: high conductivity copper. It can withstand repeated plugging and unplugging for over ten thousand times in terms of wear resistance life.