| 24. A system for providing a range of DC power to an external device connected to a power source by a first conductive means
and a second conductive means, comprising:
means for communicating a request for DC power from the external device over the first conductive means, wherein the means
for communicating a request for DC power comprises a communications protocol selected from a plurality of communications protocols
including a simple protocol and a complex protocol, and wherein the simple protocol is identified when the capacitive load
is greater than a threshold capacitive value and the complex protocol is identified when the capacitive load is less than
the threshold capacitive value; and
means for providing the requested DC power to the external device over the first conductive means, wherein the second conductive
means provides a common reference for conducting return current from the external device to the power source.
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