TAG MIL-BOOK 20 Series - Manual (Page 33)

Getting Started 1-11
Left-Side Components
Ref Component Description See Also
X-Bay Interface Connects additional wireless modem
(GPRS/GSM), internal PCMCIA or four ports
(COM 4, IEEE 1394, LAN, and USB 2.0).
IR Port Connects an IrDA-compliant device for wireless
data transfer. P. 1-6,
4-5
RJ-11
Connector Connects the telephone line. P. 2-23