Dell Dimension 4400 - Manual (Page 10)

Adding Cards
1. Shut down the computer .
2. Turn off any attached devices and disconnect them from their electrical outlets.
3. Disconnect the power cable from your computer, and then press the power button to ground the system board.
4. Open the computer cover .
5. To raise the securing lever, press the tab until it is free from the latch and then lift the lever.
6. Insert the card into the connector.
7. Ensure that the card is fully seated in the connector.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in " Safety Instructions ."
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover .
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.