6If you are not replacing the old add-in card with a new add-in card, close the open slot by inserting the metal slot cover into the opened slot.

installing an add-in card

1Align the edge of the add-in card with the slot on the chassis and gently but firmly press the card straight down into the add-in card slot. The whole connector should be seated properly in the card slot.

2On the back of the PC, replace the bracket cover for the add-in card slots, and then install the screw.

3Set the chassis upright.

4Complete the procedures to replace the side panel, and close the PC. See “opening and closing the pc“ on page 1.

replacing the battery

A lithium battery on the motherboard provides backup power for the PC’s timekeeping capability. The battery has an estimated life expectancy of seven years.

When the battery starts to weaken, the date and time may be incorrect. If the battery fails, replace it with a CR2032 lithium battery (3 volt, 220mAH rating) or an equivalent battery.

WARNING: There is danger of explosion if the battery is incorrectly replaced. Replace only with the same, or equivalent, type of battery. Discard used batteries according to the manufacturer’s instructions.

1Complete the procedures to prepare the PC and to remove the side panel. See “opening and closing the pc“ on page 1.

2Gently lay the PC on its side.

3Remove any cabling, if necessary, to reach the battery.

4Remove any memory modules, if necessary, to reach the battery. See “adding memory“ on page 6.

5To remove the battery, push the latch away from the battery and lift the battery from the socket.

6Install the new CR2032 battery in the socket, with the positive (+) side facing the latch.

7Replace memory modules or cables you removed.

8Set the chassis upright.

9Complete the procedures to replace the side panel, and to close the PC. See “opening and closing the pc“ on page 1.

NOTE: If the new card or device isn’t working, read

through the card manufacturer’s installationPrinted in instructions, and recheck all connections, including

those to the card, power supply, keyboard, and monitor.

8Upgrading and Servicing Guide