CAUTION: To prevent an unresponsive system, replace the wireless module only with a wireless module authorized for use in the computer by the governmental agency that regulates wireless devices in your country or region. If you replace the module and then receive a warning message, remove the module to restore device functionality, and then contact technical support.

Before removing the WLAN module, follow these steps:

1.Prepare the computer for disassembly (Preparation for Disassembly on page 54)

2.Remove the access panel (Computer Access Panel on page 55)

Remove the WLAN module:

1.Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.

NOTE: The WLAN antenna cable labeled “1” connects to the WLAN module “Main” terminal labeled “1”. The WLAN antenna cable labeled “2” connects to the WLAN module “Aux” terminal labeled “2”. If the computer is equipped with an 802.11a/b/g/n WLAN module, the yellow WLAN antenna cable connects to the middle terminal on the WLAN module.

2.Remove the two Phillips PM2.0×3.0 screws (2) that secure the WLAN module to the system board. (The WLAN module tilts up.)

3.Remove the WLAN module (3) by pulling the module away from the slot at an angle.

NOTE: WLAN modules are designed with a notch to prevent incorrect insertion of the WLAN module into the WLAN module slot.

Reverse this procedure to install the WLAN module.

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Chapter 6 Removal and Replacement Procedures Microtower (MT) Chassis