Dell Dimension 3000 - Manual (Page 11)

2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut
down your computer, turn them off now.
3. Disconnect any telephone or telecommunication lines from the computer.
4. Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.
5. Remove the computer cover.
6. Lay the computer on its side so that the system board is on the bottom of the inside of the computer.
7. If necessary, remove a memory module:
a. Press out the securing clip at each end of the memory module connector.
b. Grasp the module and pull up.
If the module is difficult to remove, gently ease the module back and forth to remove it from the connector.
8. To insert a module, press out the securing clip at each end of the memory module connector.
9. Align the notch on the bottom of the module with the crossbar in the connector.
10. Insert the module straight down into the connector, ensuring that it fits into the vertical guides at each end of the connector. Press firmly on the ends of
the module until it snaps into place.
If you insert the module correctly, the securing clips snap into the cutouts at each end of the module.
11. Replace the computer cover .
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
NOTICE: To avoid breaking the memory module, do not press near the middle of the module.