Dell Latitude D410 - Manual (Page 69)

c. Lift the Mini PCI card out of its connector.
5. Align the Mini PCI card with the connector at a 45-degree angle, and press the Mini PCI card into the connector until you feel a click.
6. Connect the antenna cables to the Mini PCI card.
7. Replace the metal shield.
8. Replace the keyboard .
Hard Drive
NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors and realign the card.
NOTICE: To avoid damaging the Mini PCI card, never place cables on top of or under the card.