IEEE 1394 Connector — Connects devices supporting IEEE 1394 high-speed transfer rates, such as some digital video cameras.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."infrared sensor — Lets you transfer files from your computer to another infrared-compatible device without using cable connections.When you receive your computer, the sensor is disabled. You can use the system setup program to enable the sensor. For information on transferring data,see Windows Help, the Help and Support Center, or the documentation that came with your infrared-compatible device.audio connectorshard drive — Stores software and data.Right ViewAttach headphones or speakers to the connector.Attach a microphone to the connector.