Network switch incorporating: ▪ one AC power input; ▪ multiple connectors (16a-16e) for the connection of network stream transmission cables to peripherals, plus at least one connector (16a-16e) incorporating a power wire that is not used to transmit data and that is electrically isolated from the other wires of the cable used to transmit data; ▪ one power converter able to convert AC voltage from the input into DC voltage; and ▪ one backup power supply incorporating a power storage component connected to the DC power and configured to power the network switch when the power storage component is charged and the AC power input is not powered; characterized by the fact that the network switch also incorporates: ▪ means of measurement of a power consumption (Ir) of at least one connector (16a-16e), with each peripheral connected to the connector (16a-16e) - of which there is at least one - being referenced in a table associating the type of peripheral, a grading of the importance of the peripheral, and a quantity of power allocated in the event of a power outage; ▪ one program memory incorporating multiple downgraded operating scenarios; and ▪ a control system configured to: ▪ detect a power outage (Pa) at the AC power input; ▪ detect a state of charging (Ec) of the power storage component; ▪ successively apply multiple downgraded operating scenarios when it senses a power outage (Pa), by comparing the state of charge (Ec) of the power storage component with multiple threshold values selected as a function of the importance of the peripheral; ▪ at least one downgraded scenario that is commanded as a function of the power consumption (Ir) measured by the said means of measurement, and of the quantity of power allocated to the peripheral in the event of a power outage. ▪ one AC power input; ▪ multiple connectors (16a-16e) for the connection of network stream transmission cables to peripherals, plus at least one connector (16a-16e) incorporating a power wire that is not used to transmit data and that is electrically isolated from the other wires of the cable used to transmit data; ▪ one power converter able to convert AC voltage from the input into DC voltage; and ▪ one backup power supply incorporating a power storage component connected to the DC power and configured to power the network switch when the power storage component is charged and the AC power input is not powered; ▪ means of measurement of a power consumption (Ir) of at least one connector (16a-16e), with each peripheral connected to the connector (16a-16e) - of which there is at least one - being referenced in a table associating the type of peripheral, a grading of the importance of the peripheral, and a quantity of power allocated in the event of a power outage; ▪ one program memory incorporating multiple downgraded operating scenarios; and ▪ a control system configured to: ▪ detect a power outage (Pa) at the AC power input; ▪ detect a state of charging (Ec) of the power storage component; ▪ successively apply multiple downgraded operating scenarios when it senses a power outage (Pa), by comparing the state of charge (Ec) of the power storage component with multiple threshold values selected as a function of the importance of the peripheral; ▪ at least one downgraded scenario that is commanded as a function of the power consumption (Ir) measured by the said means of measurement, and of the quantity of power allocated to the peripheral in the event of a power outage. ▪ detect a power outage (Pa) at the AC power input; ▪ detect a state of charging (Ec) of the power storage component; ▪ successively apply multiple downgraded operating scenarios when it senses a power outage (Pa), by comparing the state of charge (Ec) of the power storage component with multiple threshold values selected as a function of the importance of the peripheral; ▪ at least one downgraded scenario that is commanded as a function of the power consumption (Ir) measured by the said means of measurement, and of the quantity of power allocated to the peripheral in the event of a power outage.