WLAN module
Table 5-6 WLAN drive description and spare part number information
Description Spare part number
Realtek RTL8821CE ac 1×1 MU-MIMO+Bluetooth 4.2 M.2 PCIe WW WLAN module with 1 antenna L17365-005
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 o 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 the power from the computer by rst unplugging the power cord from the AC outlet, and then
unplugging the AC adapter from the computer.
3. Disconnect all external devices from the computer.
4. Remove the bottom cover (see Bottom cover on page 23).
5. Remove the battery (see Battery on page 25).
Remove the WLAN module:
1. Disconnect the WLAN antenna cable (1) from the terminal on the WLAN module.
2. Remove the Phillips M2.0×2.2 broad head screw (2) that secures the WLAN module to the system board.
(The WLAN module tilts up.)
30 Chapter 5 Removal and replacement procedures
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