3Com 3CRWEASYA73 / WL-575 User Manual page 322

10/100BASE-TX P
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
Pin MDI-X Signal Name
1 Receive Data plus (RD+)
2 Receive Data minus (RD-)
3 Transmit Data plus (TD+)
6 Transmit Data minus (TD-)
4,5,7,8 Not used
Note: The "+" and "-" signs represent the polarity of the wires that make up each wire pair.
A
IN SSIGNMENTS
B-2
MDI Signal Name
Transmit Data plus (TD+)
Transmit Data minus (TD-)
Receive Data plus (RD+)
Receive Data minus (RD-)
Not used