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Configuring the Ethernet controller
When you connect the computer to the network, the Ethernet controller
automatically detects the data-transfer rate (10 MBps or 100 MBps) on the network
and then sets the controller to operate at the appropriate rate. In addition, if the
Ethernet connector that the computer is connected to supports auto-negotiation, the
Ethernet controller will set the appropriate duplex state. That is, the Ethernet
controller will 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 controller supports HDX and FDX modes at both speeds.
The Ethernet controller is integrated on the system board. You do not need to set
any jumpers or configure the controller for the operating system before you use the
Ethernet controller. However, you must install a device driver to enable the
operating system to address the Ethernet controller. The device drivers are provided
on the preinstalled software and the Device Drivers and IBM Enhanced Diagnostics
CD.
Ethernet connector
There is an RJ-45 connector on the rear of the computer. See "Input/output
connector locations" on page 66 for the location of this connector.
Universal Serial Bus connectors
The computer has two Universal Serial Bus (USB) connectors, which are configured
automatically. USB is a serial interface standard for telephony and multimedia
devices. It uses Plug and Play technology to determine the type of device that is
attached to the connector.
Notes:
1. If you attach a standard (non-USB) keyboard to the keyboard connector, the
2. If you install a USB keyboard that has a mouse connector, the USB keyboard
USB cables and hubs
You need a 4-pin cable to connect devices to USB 2 or USB 3. If you plan to attach
more than two USB devices, you must use a hub to connect the devices. The hub
provides multiple connectors for attaching additional external USB devices.
USB technology transfers data at up to 12 megabits-per-second (MBps) with a
maximum of 127 external devices and a maximum signal distance of five meters
(16 ft.) per segment.
USB connectors and devices will be disabled during the power-on self-test.
emulates a mouse, and you will not be able to disable the mouse settings in the
Configuration/Setup Utility program.
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Installing options
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