Refer to the following URL for how to attach options to the Expansion areas and replace the keyboard. Confirm the part numbers of the optional items before con-
nection.
https://askpc.panasonic.co.jp/manual/option/w/
Expansion Areas
Front Expansion Area
TOUGHBOOK Universal Bay
Rear Expansion Area
IMPORTANT
l If the above options are not attached, be sure to attach a dummy pack or cover before using.