Cables and Pinouts
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. Also be sure that the length of any twisted-pair connection does not exceed 100 meters (328 feet).
The RJ-45 port on the access point supports automatic MDI/MDI-X operation, so you can use straight-through or crossover cables for all network connections to PCs, switches, or hubs. In straight-through cable, pins 1, 2, 3, and 6, at one end of the cable, are connected straight through to pins 1, 2, 3, and 6 at the other end of the cable.
Pin | MDI Signal Name | MDI-X Signal Name |
| | |
1 | Receive Data plus (RD+) | Transmit Data plus (TD+) |
| and GND (Positive Vport) | and -48V feeding power (Negative Vport) |
2 | Receive Data minus (RD-) | Transmit Data minus (TD-) |
| and GND (Positive Vport) | and -48V feeding power (Negative Vport) |
3 | Transmit Data minus (TD+) | Receive Data plus (RD+) |
| and -48V feeding power (Negative | and GND (Positive Vport) |
| Vport) | |
4 | GND (Positive Vport) | -48V feeding power (Negative Vport) |
5 | GND (Positive Vport) | -48V feeding power (Negative Vport) |
6 | Transmit Data minus (TD-) | Receive Data minus (RD-) |
| and -48V feeding power (Negative | and GND (Positive Vport) |
| Vport) | |
7 | -48V feeding power (Negative Vport) | GND (Positive Vport |
8 | -48V feeding power (Negative Vport) | GND (Positive Vport |
Note: The “+” and “-” signs represent the polarity of the wires that make up each wire pair.
