Electronic apparatus having function of switching node modules

An electronic apparatus, comprising:

• at least two node modules;
• a shared I/O module, having a first I/O interface connected with an external device and a second I/O interface electrically connected with the at least two node modules;
• and
• a switching module connecting the at least two node modules and the shared I/O module, used to cause the shared I/O module to communicate with one node module in the at least two node modules through the second I/O interface according to a selection signal when receiving the selection signal;
• the shared I/O module can be inserted in or drawn out individually;
• each of the shared I/O modules comprises an exclusive fan unit, which is received inside the shared I/O module;
• the shared I/O module comprises at least one shared I/O unit including a network card port, a USB port and a video port;
• and
• the USB port and the video port are electrically connected with the node modules through the switching module, used to cause the USB port and the video port to be electrically connected with one node module according to a selection signal when receiving the selection signal, the selection signal is generated manually or generated according to a remote control instruction.