Dell Inspiron 300m Service Manual page 49

1 cable connectors
b. Release the Mini PCI card by spreading the metal securing tabs until the card pops up slightly.
1 latch release
2 MPCI card
c. Lift the Mini PCI card out of its connector.
NOTICE: To avoid damaging the Mini PCI card, never place cables on top of or under the card.
10. To replace a Mini PCI card, align the card with the connector at a 45-degree angle, and press the Mini PCI card into the connector.
11. Lower the Mini PCI card toward the inner tabs to approximately a 20-degree angle.
12. Continue lowering the Mini PCI card until it snaps into the inner tabs of the connector.