Ruijie RG-AP840-I (V2) Hardware Installation And Reference Manual page 37

Hardware Installation Guide
Figure 7-2 Pinouts of 100BASE-TX/10BASE-T
Pin
1
2
3
6
4, 5, 7, 8
The following are the possible connection methods of straight-through and cross twisted pairs for 100BASE-
TX/10BASE-T:
Figure 7-3 Connections for 100BASE-TX/10BASE-T
Straight-through Cable
Switch
1 IRD +
+
2 IRD -
3 OTD +
+
6 OTD -
Socket
Input Receive Data+
Input Receive Data-
Output Transmit Data+
Output Transmit Data-
Not Used
Switch
1 OTD
2 OTD -
3 IRD
6 IRD -
30
Connector
Output Transmit Data+
Output Transmit Data-
Input Receive Data+
Input Receive Data-
Not Used
Cross Connection
Switch
1 IRD +
2 IRD -
3 OTD +
6 OTD -
Appendix
Switch
1IRD +
2IRD -
3 OTD +
6OTD +