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WLAN module
Description Spare part number
Broadcom 4313GN 802.11b/g/n 1x1 WiFi and 20702 Bluetooth 4.0 Combo Adapter 657325-001
Intel Centrino Advanced-N 6235 670292-001
Intel Centrino Advanced-N 6205 WLAN module 631954-001
QC/Atheros AR9462 802.11a/b/g/n 2x2 BT4.0 combo 676786-001
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. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 40).
5. Remove the hard drive cover (see
Hard drive cover on page 45).
6. Remove the service cover (see
Service cover on page 51).
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 Phillips PM2.0×3.0 screw (2) that secures the WLAN module to the system board.
(The WLAN module tilts up.)
56 Chapter 4 Removal and replacement procedures