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100BASE-TX devices.
Table 20. Ethernet RJ-45 connector pin-number assignments.
Advanced System Management ports
There are two kinds of Advanced System Management ports: a Management port
(Serial port A), and RS-485 ports.
Management Port (Serial port A)
This port uses a standard D-shell serial-port connector, labeled A on the rear of the
server/workstation. You can attach a dedicated modem to the D-shell connector on
the rear of the server/workstation to communicate with the integrated Advanced
System Management Processor. For more information see "Serial port" on page 103.
RS-485 ports
The RS-485 ports on the rear of the server/workstation enable you to connect the
Advanced System Management Processors of several rack-mounted
server/workstations so that they can communicate with each other in half-duplex
mode.
Working with cables
The server has two different cabling options: the ASM bus and the Cable Chain
Technology (C2T). The following sections discuss each of these options. While
reading about these options, keep in mind that they are independent of each other.
108
Hardware Maintenance Manual: xSeries 330 Type 8674, IntelliStation R Pro Type 6851, and Network Equipment Building
System Type 8674
Pin
Signal
1
Transmit data+
2
Transmit data-
3
Receive data+
4
Not connected
Pin
Signal
5
Not connected
6
Receive data -
7
Not connected
8
Not connected
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