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WLAN module
Description Spare part number
Atheros 9485GN 802.11b/g/n 1×1 WiFi Adapter and 3012 Bluetooth 4.0 Combo Adapter (select
models only)
655795-001
Atheros HB125 802.11b/g/n 1×1 WiFi Adapter (select models only) 675794-001
Broadcom 4313GN 802.11b/g/n 1×1 WiFi Adapter and 20702 Bluetooth 4.0+HS Combo Adapter 657325-001
Intel Centrino Wireless-N 2230 802.11b/g/n 2×2 WiFi and Bluetooth Combo Adapter 670290-001
Ralink RT5390BC8 802.11b/g/n 1×1 WiFi and Bluetooth 3.0+HS Combo Adapter 656120-001
Ralink RT5390F 802.11b/g/n 1×1 WiFi Adapter 670691-001
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. Shut down 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 all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 32).
5. Remove the service door (see
Service door on page 33).
Remove the WLAN module:
1. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE: The 1/black WLAN antenna cable is connected to the WLAN module 1/Main terminal.
The 2/gray WLAN antenna cable is connected to the WLAN module 2/Aux terminal.
2. Remove the PM 2.0×4.0 screw (2) that secures the WLAN module to the system board. (The
WLAN module tilts up.)
42 Chapter 4 Removal and replacement procedures