Cisco Router Cisco 831 - LAN Port

A-7
Cisco 831 Router and SOHO 91 Router Hardware Installation Guide
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Appendix A Specifications and Cables
LAN Port
LAN Port
The Cisco 831 and SOHO 91 routers provide a fixed onboard LAN connection,
which has a 10/100-Mbps wire-speed non-blocking switch controller that
performs the 10BASE-T/100BASE-T Ethernet switch operation. The automatic
medium dependent interface in normal mode (MDI)/medium dependent interface
in crossover mode (MDIX) crossover function eliminates the need for crossover
cables. Table A-2 provides pinouts for the Ethernet LAN port on the routers.
Table A-2 Ethernet LAN Port
Pin Function
1RX+
2RX–
3TX+
4Unused
5Unused
6TX–
7Unused
8Unused