data while pins 3 and 6 are used for receiving data.
RJ-45 Pin Assignments
Pin Number
Assignment
1
Tx+
2
Tx-
3
Rx+
6
Rx-
Note:
“+” and “-” signs represent the polarity of the wires that make up each
wire pair.
All ports on this switch support automatic MDI/MDI-X operation. In straight-
through cables, 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. The table
below shows the 10BASE-T/ 100BASE-TX MDI and MDI-X port pin outs:
Pin MDI-X
Signal Name
MDI Signal Name
1
Receive Data plus (RD+)
Transmit Data plus (TD+)
2
Receive Data minus (RD-)
Transmit Data minus (TD-)
3
Transmit Data plus (TD+)
Receive Data plus (RD+)
6
Transmit Data minus (TD-)
Receive Data minus (RD-)
