Rs-485 (Asm Interconnect) Ports - IBM 8671 - Eserver xSeries 235 Maintenance And Troubleshooting Manual

To access the Ethernet connector, connect a Category 3, 4, or 5 unshielded
twisted-pair (UTP) cable to the Ethernet (RJ-45) connector on the rear of your
server. See "System-board external port connectors" on page 50.
Note: The 100BASE-TX Fast Ethernet standard and1000BASE-T standard require
The Ethernet (RJ-45) connector has one LED that indicates Ethernet-link status.
When this green LED is on, there is an active connection on the Ethernet port.
Activity between the server and the network is indicated by the Ethernet
transmit/receive activity LED on the front of the server (see "Operator information
panel" on page 7).
Ethernet connector
There is an RJ-45 Ethernet connector on the back of the server. See "System-board
external port connectors" on page 50 for the location of this connector. The
following illustration shows the pin-number assignments for the RJ-45 connector.
These assignments apply to both 10BASE-T and 100/1000BASE-TX devices.

RS-485 (ASM interconnect) ports

The RS-485 connectors are used for the ISMP interconnect function. The ISMP
interconnect function uses these connectors to daisy-chain several system service
processors together. This function enables the service processors to communicate
with each other in half-duplex mode.
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xSeries 235 Type 8671: Hardware Maintenance Manual and Troubleshooting Guide
that the cabling in the network be Category 5 or higher.
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