Loosen the screws (1) on the expansion slot cover; then remove the cover(2).
Press out on the latches (3) on both edges of the socket at the same time, until the card moves up (4).
If a tool for removing connectors is included in the package with the new card, use it to disconnect the cables from the card (5). If no such tool is included, disconnect the cables from the card (5) by picking up the connectors with your fingers and gently unplugging them. Then remove the card.
Connect the cables to the new Mini PCI card.
Align the contact edge of the Mini PCI card with the corresponding socket contact of the computer.
Pivot the card until you can snap it into place by pressing the upper side of the connectors. Make sure that the card is firmly fixed in the slot and does not move easily.
Replace the expansion slot cover by aligning the back side of the cover first and then tightening the screws.