Aruba AP-80MB, Installation Manual

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Aruba 80 Power over Ethernet Injector Module
10/100BASE-TX Pin Assignments
Use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for RJ-45 connections: 100-ohm
Category 3 or better cable for 10 Mbps connections, or 100-ohm Category 5 or better cable for 100
Mbps connections. Also be sure that the length of any twisted-pair connection does not exceed 100
meters (328 feet).
The RJ-45 Input port on the power injector is wired with MDI pinouts. This means that you must use
crossover cables for connections to PCs or servers, and straight-through cable for connections to
switches or hubs. However, when connecting to devices that support automatic MDI/MDI-X pinout
configuration, you can use either straight-through or crossover cable.
10/100BASE-TX MDI and MDI -X Port Pinouts
MDI-X Signal Name Pin 1
MDI Signal Name
Receive Data plus (RD+) Transmit Data plus (TD+)
Receive Data minus (RD-) 2 3
Transmit Data minus (TD-)
Transmit Data plus (TD+) Receive Data plus (RD+)
Transmit Data minus (TD-) 6 4,5,7,8 Receive Data minus (RD-)
Not used Not used
Note: The “+” and “-” signs represent the polarity of the wires that make up each wire pair.