smart card slot — Supports one smart card. For more information, see "Using Smart Cards."PC Card slot — Supports one PC Card, such as a modem or network adapter. The computer ships with a plastic blank installed in the slot. For moreinformation, see "Using PC Cards."audio connectorsBack Viewnetwork connector (RJ-45)modem connector (RJ-11)USB connectorsAttach headphones to the connector.Attach a microphone to the connector.CAUTION: Do not block, push objects into, or allow dust to accumulate in the air vents. Do not store your computer in a low-airflow environment,such as a closed briefcase, while it is running. Restricting the airflow can damage the computer or cause a fire.1 network connector (RJ-45) 4 video connector2 modem connector (RJ-11) 5 AC adapter connector3 USB connectors (2) 6 air ventsNOTICE: The network connector is slightly larger than the modem connector. To avoid damaging the computer, do not plug a telephone line into thenetwork connector.Connects the computer to a network. The two lights next to the connector indicate status and activity for wired network connections.For information on using the network adapter, see the device user's guide supplied with your computer. See "Finding Information."If you ordered the optional internal modem, connect the telephone line to the modem connector.For information on using the modem, see the online modem documentation supplied with your computer. See "Finding Information."