IBM 867413x - Eserver xSeries 330 8674, Hardware Maintenance Manual

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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 Signal
1 VCC
2 -Data
3 +Data
4 Ground
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
(10 Mbps or 100 Mbps) 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 PCI
family of 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.
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Hardware Maintenance Manual: xSeries 330 Type 8674, IntelliStation R Pro Type 6851, and Network Equipment Building
System Type 8674