PCB (Printed Circuit board) installation structure for communication device and digital programmer switcher applying structure

The invention relates to a PCB (Printed Circuit board) installation structure for a communication device and a digital programmer switcher applying the structure. The problems that when a PCB of an existing communication device, especially a digital programmer switcher is installed, mostly, the bottom part of the PCB is plugged with the connecting end in a housing, and then a serial interface component is installed on the side wall of the housing through bolts or other fasteners, so that the installation structure needs an extra installation tool, and the assembly and the disassembly are inconvenient are mainly solved. According to the PCB installation structure for the communication device and the digital programmer switcher applying the structure provided by the invention, an assembly of the serial interface component and a clamping part and a limit groove in the side wall of the housing form fastening limit match, and during disassembly, only the detachably connected clamping part needs to be taken down, and the PCB can be disassembled and replaced conveniently, so that the PCB is convenient to disassemble, replace and maintain, firm in installation structure, and stable in structure, and cannot be fallen down when being transported.