Disclosed are various embodiments that are employed to ensure power source redundancy for a computing device. A plurality of power inputs of a computing device are coupled to at least one of a plurality of power sources. A determination is made as to whether at least two identifiers embodied in a corresponding at least two data signals transmitted over at least two power lines are the same. Each of the power lines is coupled to a respective one of the power inputs, and the data signals are transmitted by at least one of the power sources.