computer to bring them into the 30-degree cone.The Microsoft Windows NT 4.0 operating system does not support the use of IR devices.The IR port is compatible with Infrared Data Association (IrDA) 1.1 (Fast IR) and 1.0 (Slow IR) standards. AnIR data stream is transmitted through a lens in the computer up to a distance of 1 meter (m) (3.3 feet [ft]).This light is received by a compatible computer, printer, mouse, or remote control.The default address of the IR port is COM3. To avoid resource conflicts with other devices, remap theaddress of the IR port.When the computer is docked with the C/Port APR Family or C/Dock Expansion Station Family dockingsolution, the IR port on the computer is automatically disabled.For more information about using an IR device, see the documentation that came with your operatingsystem.ModemYou can connect a telephone line to the optional modem through the modem connector on the right side ofthe computer (see Figure 6).NOTICE: Do not confuse the modem and network connectors on your computer. Do notplug a telephone line into the network connector.Figure 6. Modem and Network Connectors1 Optional modem connector2 Optional network connectorFor information on using the modem, see the online modem documentation supplied with your computer. Toaccess this documentation, double-click the Dell Documents icon on the Windows desktop, clickSystem Information, and then click Communications.NetworkYou can connect to the integrated network interface controller (NIC) through the optional network connectoron the right side of the computer (see Figure 6).