Electronic apparatus

An electronic apparatus, comprising:

• a case, which comprises two sidewalls and a bottom plate connecting the two sidewalls, the case has a first end along a direction of the sidewalls and a second end opposite the first end, the case has a first receiving space adjacent to the first end, and the case has a second receiving space adjacent to the second end;
• a back plate, which is disposed, perpendicular to the two sidewalls, between the first receiving space and the second receiving space, has a first insertion and extraction portion towards the first receiving space and a second insertion and extraction portion towards the second receiving space;
• the first receiving space is divided into multiple rear-end regions having the same height and arranged side by side;
• a multiple of I/O modules, each I/O module is received in each rear-end region of the first receiving space respectively, each I/O module has an I/O module assembling portion, and is pluggably electrically connected to the first insertion and extraction portion of the back plate;
• a power supply module, which is received in the first receiving space, has a power supply module assembling portion, and is pluggably electrically connected to the first insertion and extraction portion of the back plate, used to supply power of the electronic apparatus;
• a node module, which is disposed in the second receiving space, has a node module assembling portion, and is pluggably electrically connected to the second insertion and extraction portion of the back plate, and communicated with a corresponding I/O module through the back plate;
• the second receiving space is divided into multiple front-end regions, and each of the front-end regions is provided with at least one node module, the first receiving space is divided into multiple rear-end regions having the same height and arranged side by side, and each of the rear-end regions is used to receive at least one I/O module or at least one power supply module.