The table below shows the 10BASE-T/100BASE-TX MDI-X and MDI
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 at 10/100 Mbps
MDI Signal Name
Transmit Data plus (TD+)
Transmit Data minus (TD-)
Receive Data plus (RD+)
Receive Data minus (RD-)
Not used at 10/100 Mbps
9