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Reverse this procedure to install the hard drive.
WLAN module
Description Spare part number
Atheros AR9485 802.11b/g/n WiFi Adapter 675794-001
Broadcom BCM943228HMB 802.11abgn 2x2 Wi-Fi Adapter, Broadcom Bluetooth 4.0 Adapter 730668-001
Ralink RT3290LE 802.11b/g/n 1×1 WiFi and Bluetooth 4.0 Combo Adapter 690020-001
Realtek RTL8188EE 802.11bgn Wi-Fi Adapter 709848-001
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 27).
5. Remove the service cover (see
Service cover on page 28).
Component replacement procedures
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