An input/output device for an electric or electronic cabinet grouping together a plurality of devices such as computers. The input/output device includes input/output channels, conversion units and at least one computing unit. The conversion unit is connected to the input/output channels and to the computing unit. A digital network link protocol management unit is connected to the computing unit and to at least one transceiver. The computing unit executes software to provide a digital transmission of data representative of the input/output values between the network and the computers via the transceiver. An electric cabinet grouping together computers, each computer provided with a transceiver. The electric cabinet includes the input/output device.