NOTE:
If the WLAN antenna is not connected to the terminal on the WLAN module, a protective sleeve
should be installed on the antenna connector, as shown in the following illustration.
Reverse this procedure to install the WLAN module.
Memory module
Description
Spare part number
8-GB memory module (PC3, 12800, 1600)
693374-001
4-GB memory module (PC3, 12800, 1600)
691740-001
NOTE:
Before adding a memory module, make sure the computer has the most recent BIOS version,
and update the BIOS if needed.
Before removing a memory 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 bottom cover (see
Bottom cover on page 27
).
Remove the memory module:
1.
Disconnect the battery cable from the system board.
Component replacement procedures
33
