Dell Inspiron 8100 - Manual (Page 57)

l Attach record/playback devices such as a cassette player or CD player to the connector.
l Attach headphones or speakers to the connector.
l Attach a microphone to the connector.
IEEE 1394 Connector
Infrared Sensor
The infrared sensor lets you transfer files from the computer to another infrared device without using cable connections.
Hard Drive
The hard drive reads and writes data on a hard disk.
Modem Connector
Use this connector to attach IEEE 1394-compatible devices such as a digital camera to your computer.
HINT: The infrared sensor does not function when the computer is connected to a port replicator.
If you ordered the optional internal modem, use this connector to plug in the telephone connector.