Ethernet Ports - IBM IntelliStation R Pro Hardware Maintenance Manual

USB-port connectors: Each USB port has an external connector on the rear of the
computer for attaching USB compatible devices.
The following table shows the pin-number assignments for the USB-port connectors
on the rear of your computer.
Table 16. USB-port connector pin-number assignments.
Pin
1
2
3
4

Ethernet ports

Your computer comes with two integrated Ethernet controllers. These controllers
provide an interface for connecting to 10-Mbps or 100-Mbps networks and provide
full-duplex (FDX) capability, which enables simultaneous transmission and reception
of data on the Ethernet local area network (LAN).
To access the Ethernet ports, connect a Category 3, 4 or 5 unshielded twisted-pair
(UTP) cable to the RJ-45 connector on the rear of your computer.
Note: The 100BASE-TX Fast Ethernet standard requires that the cabling in the
network be Category 5 or higher.
Configuring the Ethernet controllers: When you connect your computer to the
network, the Ethernet controllers automatically detect the data-transfer rate (10Mbps
or 100Mbps) on the network and then set the controllers to operate at the appropriate
rate. In addition, if the Ethernet ports that your computer is connected to support
auto-negotiation, the Ethernet controllers set the appropriate duplex state. That is, the
Ethernet controllers adjust to the network data rate, whether the data rate is standard
Ethernet (10BASE-T), Fast Ethernet (100BASE-TX), half duplex (HDX), or full duplex
(FDX). The controllers support half-duplex (HDX) and full-duplex (FDX) modes at
both speeds.
The Ethernet controllers are PCI Plug and Play devices. You do not need to set any
jumpers or configure the controllers for your operating system before you use the
Ethernet controllers. However, you must install a device driver to enable the
operating system to address the Ethernet controllers.
Failover for redundant Ethernet: When you connect your server to the network, the
Ethernet controllers automatically detect the data transfer rate (10 Mbps) or or 100
Mbps) on the network and then set the controllers to operate at the appropriate rate.
The IBM 10/100 Ethernet Adapter or the IBM 10/100 EtherJet
adapters are optional redundant network adapters that you can install in your server.
You can configure either one of the integrated Ethernet controllers or the Network
adapter as the primary Ethernet controller. In failover mode, if the primary Ethernet
controller detects a link failure, all Ethernet traffic associated with it is switched to the
redundant (secondary) controller. This switching occurs without any user
intervention. When the primary link is restored to an operational state, the Ethernet
traffic switches back to the primary Ethernet controller.
VCC
-Data
+Data
Ground
Signal
™
PCI family of
Installing options
99