Dell Inspiron 1720 (Mid 2007) - Manual (Page 163)

Adding and Replacing Parts
163
Replacing the FCM
NOTICE:
Install the FCM in the WWAN or WPAN slot. Do not install an FCM in the
WLAN card slot. Doing so may cause damage to your computer.
1 Insert the
FCM connector at a 45-degree angle into the system board
connector labeled "FCM".
2 Press the other end of the
FCM down into the securing tabs until the card
clicks into place.
1 metal securing tabs (2) 2 FCM
1
2