Multi-serial port network controller

The utility model discloses a multi-serial port network controller which is technically characterized in that the multi-serial port network controller comprises an installation plate, a shell and a controller core body installed and fixed in an inner cavity of the shell, the two ends of the shell are respectively and fixedly connected with two installation pieces used for installation and fixation, the bottom of the shell is fixedly connected with a plurality of supporting columns, and the supporting columns are fixedly connected with the shell. The mounting piece is fixedly connected with the mounting plate through bolts, and a plurality of kidney-shaped grooves are formed in the mounting plate; a controller core is arranged in the shell, heat dissipation assemblies are arranged at the positions, on the two sides of the controller core, of an inner cavity of the shell, air inlets allowing airflow to enter are formed in the two sides of the shell respectively, filtering assemblies used for filtering impuritie