1.Turn off the computer properly through the operating system, then turn off any external devices.

2.Disconnect the power cord from the power outlet.

CAUTION: You must disconnect the power cord and wait approximately 30 seconds for the power to drain before replacing the memory module. Regardless of the power-on state, voltage is always supplied to the memory module as long as the computer is plugged into an active AC outlet. Adding or removing a memory module while voltage is present may cause irreparable damage to the memory module or system board.

3.Remove the front panel. See Removing the front panel on page 19.

4.To remove the SODIMM, press outward on the two latches on each side of the SODIMM (1) then pull the SODIMM out of the socket (2).

5.To install a SODIMM, slide the new SODIMM into the socket at approximately a 30° angle (1) then press the SODIMM down into the socket (2) so that the latches lock it in place.

NOTE: A memory module can be installed in only one way. Match the notch on the module with the tab on the memory socket.

6.Replace the front panel. See Replacing the front panel on page 21.

7.Reconnect the power cord and press the power button.

18 Chapter 2 Hardware upgrades