Toshiba Satellite Pro 4300 User Manual page 208

Thread the modem cable into the hole shown below and fit the modem
3.
jack into its slot.
Seat the cover and press to secure the latches. Be sure the jack fits
4.
the hole in the cover properly.
Secure the cover with one screw.
5.
Accessing the modem slot
To access the modem slot, you will need to move back the keyboard.
Follow the steps below.
Turn the computer right side up.
1.
Slide the display latch on the front of the computer to the right and
2.
open the display panel.
A plastic strip lies between the keyboard and the palm rest. To remove
3.
it, slip your fingernails or a thin object between the strip and the palm
rest. Pry up to release six latches securing the strip.
A metal brace lies under the plastic strip at about the midpoint.
4.
Remove one screw securing the metal brace and lift it out.
Lift up the key board a little and move it back three or four centimetres.
5.
Be careful not to pull the keyboard's ribbon cable.
H-2 International Modem Guide
Seating the modem jack
User's Manual