A high-speed electrical data transmission system (10) includes a signal mixer (13) for receiving high-speed data from external network transceiver (12). The signal mixer (13) converts the data into an electrical current-fluctuating data signal. A signal processor (17) is located remotely of the signal mixer (13) and is connected electrically thereto by a simple/inexpensive cable (15) having only two operative conductors and receives the current-fluctuating data signal via the cable (15). The signal processor (17) converts the current-fluctuating data signal into a voltage-fluctuating data signal for distribution to a local area network.