IBM Netfinity 3000, User Handbook Manual

Page: 177 / 370

Connecting external options
Ethernet connector
The system board in your Netfinity 3000 server contains an Ethernet
controller. The controller has an external RJ-45 connector on the rear
of the server that is used with a Category 5 twisted-pair cable.
Through this connector, you can attach an Ethernet network cable to
the internal transceiver in your server.
Attention:
The 10BASE-T Ethernet and the 100BASE-TX Fast Ethernet cabling
in the network must be Category 5 or higher to meet various
standards, including electromagnetic compatibility.
See “Configuring the Ethernet controller” on page 59 for additional
information about the Ethernet controller.
Table 10 shows the pin-number assignments for the RJ-45 connector.
These assignments apply to both 10BASE-T and 100BASE-TX
devices.
10BASE-T or 100 BASE-TX
UTP Cable
RJ-45 Modular Plug Connector
1
2
3
Pins 6
Table 10. Ethernet connector pin-number assignments
Pin Signal Pin Signal
1 Transmit data
+
5 Reserved
2 Transmit data
−
6 Receive data
−
3 Receive data
+
7 Reserved
4 Reserved 8 Reserved
Chapter 4. Installing options
143