| Alternative A & B |
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| August 2008 | |
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Alternative A refers to the assignment of Pin #1, 2, 3 and 6 of the 8 wires of a RJ45 based Ethernet cable for carrying both power and data Alternative B refers to the assignment of Pin #1, 2, 3 and 6 for data and Pin #4, 5, 7 and 8 for power |