Service Guide

Connecting external options

This section shows you the location of the parts to which you can connect any external devices.

If you have a Model 200, you can attach a Model EXP enclosure to your appliance.

Installation procedure

To attach an external device:

1. Read Before you begin and the documentation that comes with your options.
2. Switch off the appliance and all attached devices.
3. Follow the instructions that come with the option to prepare it for installation and to connect it to the appliance.

Input/output connector locations

The following illustration shows the input/output connectors (ports) and the expansion slots on the rear of the appliance. For pin assignments and other details about these connectors, see "Input/output ports".

Figure 40. Input/output connectors (ports) and expansion slots

Input/output ports

This section provides information about the input/output (I/O) ports on your appliance. These ports include the following:

• One video port
• One keyboard port
• One serial port
• One Service Ethernet port (used for configuration and service only)

Keyboard port

There is one keyboard port on the rear of your appliance.

The following table shows the pin-number assignments for the keyboard connector on the rear of your appliance.

Table 23. Keyboard connector pin-number assignments

Pin	I/O	Signal
1	I/O	Data
2	N/A	Reserved
3	N/A	Ground
4	N/A	+5 V dc
5	I/O	Keyboard clock
6	N/A	Reserved

Auxiliary device (pointing device) port

The system board has one auxiliary-device port that supports a mouse or other pointing device.

Note:

Attaching a mouse to this appliance causes a system configuration error. To correct this error: Attach a keyboard and monitor. Follow the on-screen prompts to save the configuration with a mouse.

Figure 41. Auxiliary-device port

The following table shows the pin-number assignments for the auxiliary-device connector on the rear of your appliance.

Table 24. Auxiliary-device connector pin-number assignments

Pin	Signal
1	Data
2	Not connected
3	Ground
4	+5 V dc
5	Clock
6	Not connected

Video port

Your appliance comes with an integrated super video graphics array (SVGA) video controller.

Service Ethernet port

The Service Ethernet port is for service use only.

Notes:

1. The 100BASE-TX Fast Ethernet standard requires that the cabling in the network be Category 5 or higher.

Configuring the Ethernet controller

When you connect your appliance 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. 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 half-duplex (HDX) and full-duplex (FDX) modes at both speeds.