Embedded computer

The present invention discloses an embedded computer comprising a DC power input module, N ethernet input modules, and an output module, wherein N is a positive integer number. The DC power input module is for adjusting a predetermined voltage from a received external DC. The ethernet input module is for adjusting the predetermined voltage from a Power over Ethernet (PoE). The output module is for controlling a ratio of the currents from the DC power input module and a plurality of the ethernet input modules to obtain a desired output current. The invention uses the DC power input module to receiving wide voltage current, uses a plurality of the ethernet input modules to convert and combine a plurality of PoEs for obtaining a required current, and adjusting the ratio of the currents by the output module. The invention provides a redundant system with steady voltage and reduces the cost and quantity of the requirement for equipments.