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APPENDIX E: CONNECTOR PIN ASSIGNMENTS
This appendix provides information about the RJ-45 plug and the RJ-45 connector used for the NETGEAR Model FSM726S or FSM750S Managed
Stackable Switch.
RJ-45 Plug and RJ-45 Connector
In a Fast Ethernet network, it is important that all 100BASE-T certified Category 5 cabling use RJ-45 plugs. The RJ-45 plug accepts 4-pair UTP or
shielded twisted-pair (STP) 100-ohm cable and connects into the RJ-45 connector. The RJ-45 connector is used to connect stations, hubs, and
switches through UTP cable; it supports 10 Mbps, 100 Mbps, or 1000 Mbps data transmission.
Figure E-1 shows the RJ-45 plug and RJ-45 connector.
Figure E-1: RJ-45 Plug and RJ-45 Connector with Built-in LEDs
Table E-1 lists the pin assignments for the 10/100 Mbps RJ-45 plug and the RJ-45 connector.
Table E-1. 10/100 Mbps RJ-45 Plug and RJ-45 Connector Pin Assignments
Pin Normal Assignment on Ports 1 to 8 Uplink Assignment on Port 8
1 Input Receive Data + Output Transmit Data +
2 Input Receive Data – Output Transmit Data –
3 Output Transmit Data + Input Receive Data +
6 Output Transmit Data – Input Receive Data –
4, 5, 7, 8 Internal termination, not used for data transmission
Table E-2 lists the pin assignments for the 100/1000 Mbps RJ-45 plug and the RJ-45 connector.
Table E-2. 100/1000 Mbps RJ-45 Plug and RJ-45 Connector Pin Assignments
Pin Channel Description
1
2
A Rx/Tx Data +
Rx/Tx Data
3
6
B Rx/Tx Data +
Rx/Tx Data
4
5
C Rx/Tx Data +
Rx/Tx Data
7
8
D Rx/Tx Data +
Rx/Tx Data