WLAN module
Table 5-15 WLAN module description and spare part number information
Description Spare part number
RTL8822BE ac 2×2 MU-MIMO+Bluetooth 4.2 M.2 PCIe WW with 2 antenna 924813-855
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 25), and then remove the following components:
a. Battery (see Battery on page 26)
b. Solid-state drive (see Solid-state drive on page 28)
c. Fans (see Fans on page 40)
d. System board (see System board on page 47)
Remove the WLAN module:
1. Turn the system board upside down with the front edge toward you.
52 Chapter 5 Removal and replacement procedures
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