When connecting cables to the modem, what is typically used to convert voltage?

When connecting cables to the modem, an external transformer is typically used to convert voltage. Modems require specific voltage levels to operate correctly, and transformers serve the essential function of stepping down higher voltages from the power outlet to the appropriate lower voltages needed by the modem. This conversion is crucial in ensuring that the modem receives the correct electrical power without damage or malfunction.

An internal regulator, while it does perform voltage regulation tasks, is typically found within the device's circuitry and works with the power supply after the voltage has been converted. A voltage stabilizer serves to maintain a constant voltage level, but it does not inherently convert incoming voltage like a transformer does. A power inverter, on the other hand, is used to convert DC voltage to AC voltage, which is not required in the context of connecting cables to a modem that typically runs on standard AC power from a wall outlet.