7Push down the two retaining clips on the ends of the socket until the memory module pops out of the socket.

DIMM and

DDR DIMM

WARNING: Do not pull the memory module out of the socket. Use the retaining clips to eject the module.

8Holding the memory module by its edges only, lift it away from the socket. Store it in its antistatic packaging.

To install a new memory module in this socket, see “installing a memory module” on page 126.

installing add-in cards

At some point, you may want to add a PCI or AGP card to the computer to accommodate a new component, such as a scanner, or to upgrade an existing card.

WARNING: Do not overload the system by installing add-in cards that draw excessive current. The system is designed to provide 2 amps (average) of +5 V power for each board/card in the computer. The total +5 V current draw in a fully loaded system (one with all add-in card slots filled) must not exceed the total number of slots multiplied by 2 amps.

To add or replace an add-in card:

1Turn off the computer and all peripherals.

2Disconnect the modem/telephone cable.

3Disconnect the power cord and all other attached cables (such as the keyboard, mouse, and monitor).

4Remove the side panel (see “removing the side panel” on page 121).

5Gently lay the computer on its side.

128user’s guide