Dell Inspiron 640M - Manual (Page 121)

Adding and Replacing Parts
121
Modem (Optional)
If you ordered the optional modem at the same time that you ordered your computer, the modem is
already installed.
CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
1 Follow the procedures in "Before You Begin" on page 109.
2 Turn the computer over, loosen the captive screws on the modem/Mini-Card/wireless cover, and then
remove the cover.
3 Remove the existing modem:
a Remove the screw securing the modem to the system board, and set it aside.
b Pull straight up on the attached pull-tab to lift the modem out of its connector on the system
board, and disconnect the modem cable.
1 modem/Mini-Card/wireless cover
1