I/O Panel

Dell™ OptiPlex™ GX270 Service Manual

CAUTION: Before you begin any of the procedures in this section, follow the steps in "Safety Instructions."

NOTICE: Before you disconnect a device from the computer or remove a component from the system board, verify that the standby power light on the system board has turned off. To locate the light, see "System Board."

Shut down the computer through the Start menu.
Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now.

NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.

Disconnect any telephone or telecommunication lines from the computer.
Disconnect your computer and all attached devices from electrical outlets and press the power button to ground the system board.
If you have installed a padlock through the padlock ring on the back panel, remove the padlock.

CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.

Open the computer cover.

NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components.

Removing the I/O Panel

On the small form-factor computer, to access the screw that holds the I/O panel to the computer, remove the hard drive.
On the small desktop computer, disconnect the hard-drive data cable.
Disconnect all cables that are connected to the I/O panel.

Note the routing of the control panel cable as you remove it from the computer so that you can replace it correctly.

From inside the computer cover, remove the mounting screw that secures the I/O panel to the computer.
Remove the I/O panel from the computer.

Small Form-Factor Computer

1
internal speaker cable
4
mounting screw

2
chassis-intrusion switch cable
5
front audio cable

3
control panel cable
6
I/O cable

Small Desktop Computer

1
chassis-intrusion switch cable
4
control panel cable

2
internal speaker cable
5
front audio cable

3
I/O cable
6
mounting screw

Small Mini-Tower Computer

1
control panel cable
4
mounting screw

2
front audio cable
5
internal speaker cable

3
I/O cable
6
chassis-intrusion switch cable

Replacing the I/O Panel

To replace the I/O panel, follow the removal procedures in the reverse order.

Back to Contents Page

1	internal speaker cable	4	mounting screw
2	chassis-intrusion switch cable	5	front audio cable
3	control panel cable	6	I/O cable