The 90 degree horizontal female socket of the MICRO USB interface has a column straight edge, and the distance between the two pin plug boards on the MICRO USB female socket is 5.9 straight ports. This micro USB motherboard is a conventional dual pin DIP with a spacing of 5.9mm. The hardware shell has a double solder pad at the end, which can create a front plug and back stick effect. The plastic terminal has a double positioning column at the bottom. The micro USB motherboard connector is a commonly used data charging device interface in electronic products, especially communication products. Its advantages are small size, good compatibility, and low cost. However, many customers who are just involved in PCBA chip mounting production often overlook some basic issues. Generally speaking, the micro USB motherboard is loaded and shipped with a tape reel, and the mounting process is completed automatically by the SMT device suction nozzle, But there are also a small number of customers who have to manually place the micro USB motherboard onto the PCB circuit board's solder pad due to product technology or circuit routing on the PCB circuit board. Many customers have found that manually placing the micro-USB motherboard connector on the solder pad can lead to deviation in the overall interface when the micro USB motherboard connector comes out of the SMT port. The five pin pins of the micro USB motherboard cannot correspond to the solder pad, resulting in no function or short circuit, In fact, this is due to the lack of plastic positioning columns at the bottom of the micro USB base. Usually, due to the use of machine stickers, such problems are not found. The main function of the plastic positioning columns is to provide units, not to fix them. Another issue is the problem of faulty soldering of pins. Generally, customers who encounter this type of problem are those who use tube mounting. During production, for the sake of convenience, they pour out all the packaging tubes of the micro USB base at once, but do not pay attention to the force when picking up the materials. The products are squeezed against each other, resulting in a pin foot being bent under force and exhibiting unevenness on the solder pad, resulting in faulty soldering and false soldering during welding, This type of problem usually occurs in the long needle micro USB base, and the longer the pin pin, the smaller its compressive strength