Dell Latitude 120L - Manual (Page 59)

3. If a Mini PCI card is not already installed, go to step 4 . If you are replacing a Mini PCI card, remove the existing card:
a. Disconnect the antenna cable from the Mini PCI card.
b. Release the Mini PCI card by spreading the metal securing tabs until the card pops up slightly.
c. Lift the Mini PCI card out of its connector.
4. Install the replacement Mini PCI card:
a. Align the Mini PCI card with the connector at a 45-degree angle, and press the Mini PCI card into the connector until it clicks.
1 captive screws (3)
1 antenna cable
NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors and realign the card.
1 Mini PCI card 2 metal securing tabs (2)
NOTICE: To avoid damaging the Mini PCI card, make sure the antenna cable is not under the card when you click the card into place.