5. Remove the battery (5).
Reverse this procedure to install the battery.
WLAN module
Description Spare part number
Intel Dual band wireless-AC 8260 802.11AC 2×2 WiFi + Bluetooth 4.0 Combo Adapter 806721-001
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 o 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 rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the bottom cover (see Bottom cover on page 22).
5. Disconnect the battery cable from the system board (see Battery on page 23).
Remove the WLAN module:
1. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
24 Chapter 5 Removal and replacement procedures
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