http://http://panasonic.net/avc/toughbook/full/network/index.html

(1) Headphone jack
(2) Microphone jack
(3) USB port(USB 2.0)
(4) External DisplayPort
(5) Serial port
(6) DC-IN jack
(7) USB port(USB 2.0)
(8) IEEE 1394 Interface Connector
(9) Modem port
(10) LAN port
(11) SD Memory Card Slot(
12) Stylus/Pen Holder
(13) PC Card Slot (for model without Smart Card Slot) Smart Card Slot (for model with Smart Card Slot)
(14) Express Card Slot (for model without Smart Card Slot) PC Card Slot (for model with Smart Card Slot)
(15) Battery pack(16) Hard Disk Drive