WLAN module
Description Spare part number
Atheros AR9485 802.11b/g/n 1x1 WiFi Adapter 675794-001
Broadcom BCM943228 802.11abgn 2x2 Wi-Fi + Bluetooth 4.0 Combo Adapter 730668-001
Ralink RT3290LE 802.11b/g/n 1×1 WiFi and Bluetooth 4.0 Combo Adapter 690020-001
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 33).
5. Remove the hard drive service cover (see
Hard drive on page 34).
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”.
2. Remove the two Phillips PM2.0×2.0 screws (2) that secure the WLAN module to the system
board. (The WLAN module tilts up.)
Component replacement procedures 37
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