Regarding the modified handle of PS, I also mentioned earlier, because the wiring is soldered to the parallel port, it is easy to cause the failure of solder detachment, so many friends will think that this handle is no longer useful. In fact, it is not the case. Just open the parallel port to see if the connection point is off. Just find an identical PS modified handle, and then compare the lines above and solder the dropped wires on. Maybe some friends will say that the handle is not defined for every solder joint on the parallel port. If I don’t have the same handle, won’t it be all right? Don’t worry, I will modify the PS how the handle is welded on the parallel port. Tell everyone. The parallel port is a trapezoidal (sold in the electronic market) interface. You put the short bottom up, and then you see that there should be 7 wires in the handle (take a standard handle as an example). They are black, yellow, red, blue, green, coffee and orange. Then look at the two rows of solder pins in the parallel port, among them, the black one corresponds to the first row, the 5th and 6th solder pins. (Counting from left to right) There is only the black wire in the upper row. Then orange corresponds to the second solder pin in the lower row, yellow corresponds to the third solder pin in the lower row, blue for the fourth solder pin, red for the 5th, 6, 7, 8, 9th solder pins, and brown corresponds to the third solder pin. 10 solder pins, green is for the 12th solder pins. The above is the definition of the parallel port welding of the PS modified handle.