Dell Inspiron 8500 - Manual (Page 133)

Adding and Replacing Parts 133
10 Connect the modem cable to the modem.
NOTICE: The cable connectors are keyed for correct insertion; do not force
the connections.
11 Align the modem with the screw hole, and press the modem into the
connector on the system board.
12 Install the screw to secure the modem to the system board.
13 Replace the Mini PCI card/modem cover.
screw
system board connector
pull-tab
modem
modem cable