Patent ID: 8497779

Claim:
A system, comprising: a plurality of power adaptors; each of the power adaptors having a plug for coupling to one of the power inputs of a computing device, the power inputs providing for power source redundancy for the computing device; each of the power adaptors having a power receptacle for coupling to one of a plurality of power sources; each of the power adaptors having an alarm output; a plurality of data communication circuits, each data communication circuit being located in a corresponding one of the power adaptors and each data communication circuit being configured to receive one of a plurality of power source identifiers in a data signal transmitted by one of the power sources and received through the power receptacle; each of the data communication circuits further comprising a data communication port to establish a data link therebetween; and the data communication circuits further comprising logic to exchange the power source identifiers received through the respective power receptacles and to determine whether the power source identifiers both identify the same one of the power sources.