Dell Inspiron 2000 - Modem and Network Connections

If the device has a power cable, plug the cable into a grounded electrical outlet.
Restart the computer.
Modem
You can connect a telephone line to the integrated modem through the RJ11 modem connector on the back of the computer.
NOTICE: Do not confuse the modem and NIC connectors on your computer. Do not plug a telephone line into the NIC connector.
To connect the telephone line to your computer, perform the following steps:
Turn off the computer.
Connect the telephone line to the modem connector on the back of the computer.
Restart the computer.
NIC
You can connect to the integrated NIC through the RJ45 connector on the back of the computer.
NOTICE: Do not confuse the modem and NIC connectors on your computer. Do not plug a telephone line into the NIC connector.
To connect the network cable to your computer, perform the following steps:
Turn off the computer.
Connect the network cable to the NIC connector on the back of the computer.
Restart the computer.
External Media Options