INSTALLATION AND REMOVAL

Installing the Module into a Switch

CAUTION: This Module is not hot-insertable or hot-swappable. Always make sure that the Switch is powered down and disconnected from the mains before installing or removing a Module. Use the following instructions when installing or removing a Module.

CAUTION: This Module is only designed to work with the 3Com SuperStack 3 Switch 4900 series.

To install the Module:

1Ensure that the Switch is disconnected from the mains power supply and that you are wearing an anti-static wristband connected to a suitable earth point.

2Place the Switch on a flat surface. Using a suitable screwdriver, remove the blanking plate from the rear of the Switch. Do not remove any other screws from the rear of the Switch.

3Keep the blanking plate and screws in a safe place. If you remove the Module at any time, you must replace the blanking plate to prevent dust and debris entering the Switch and to aid the circulation of cooling air.

4Hold the Module so that the text on the front panel is upright, and insert it into the Switch, ensuring the back panel is flush against the back of the Switch. Tighten the three captive thumbscrews securing the Module with a suitable tool.

5To activate the Module:

a Ensure that the Switch is powered-up.

b Remove the protective stopper from the MT-RJ fiber socket on the Module. Squeeze the top and bottom of the stopper between your thumb and forefinger then remove it.

c Plug the MT-RJ connector on the fiber cable into the fiber port on the Module.

d Connect the other end of the fiber optic cable to a device fitted with a 1000BASE-LX Gigabit Ethernet connection.

6Check the LEDs on the front of the Switch and the rear of the Module to ensure that the Module is operating correctly. Refer to “LEDs” below for more information.

Removing the Module from a Switch

1Ensure that the power supply and the fiber backbone connection cables are disconnected from the Switch.

2Place the Switch on a flat surface. Undo the three captive thumbscrews securing the Module into the Switch. Do not remove any other screws from the Switch.

3If you are not fitting another Module immediately, replace the blanking plate to ensure that dust and debris

do not enter the Switch and to aid the circulation of cooling air.

LEDs

You can gather information about the status of the Module and its packet activity using the Expansion Module LEDs on the front of the Switch and the Port LEDs on the rear of the Module.

Expansion Module Activity LED (Switch)

Status

Color

Meaning

On

Amber

Packets are being transmitted or received

 

 

on the Module.

Off

No color

There are no packets being transmitted or

 

 

received on the Module.

 

Expansion Module Status LED (Switch)

Status

Color

Meaning

On

Green

N/A (cannot report status of all ports

 

 

together).

Off

No color

The Module is not installed.

Flashing

Amber

The Module is installed but is not

 

 

recognised (faulty or unsupported).

On

Amber

The Module is installed.

 

 

Port Activity LED (Module)

 

Status

Color

Meaning

On

Amber

Packets are being transmitted or received

 

 

on this port.

Off

No color

There are no packets being transmitted or

 

 

received on this port.

 

 

Port Status LED (Module)

 

Status

Color

Meaning

On

Green

A link is present and the port is enabled.

Off

No color

There is no link present.

Flashing

Green

A link is present and the port is disabled.

 

 

 

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3Com DUA1771-2AAA01 manual Installing the Module into a Switch, Removing the Module from a Switch, LEDs
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DUA1771-2AAA01 specifications

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