The combined audio and video output jack (A/V/ jack) on the iBook computer provides a composite video signal for a TV monitor. The video output mirrors the flat panel display: internal and external video share the same buffer, and the hardware sends the image to both displays.
The A/V jack is located on the left side of the computer at the left palm rest. The jack accepts a special mini-plug with an additional contact ring that carries the composite video output signal; see "A/V Jack". An adaptor cable with separate RCA-type connectors for stereo audio and composite video outputs is available.
Display sizes supported are 640 by 480, 800 by 600, and 1024 by 768 pixels. The composite video can be displayed on either an NTSC monitor or a PAL monitor. When a monitor is connected by way of the A/V jack, the computer detects the presence of the A/V mini-plug and enables the composite video output. The settings for the display sizes and standards (NTSC or PAL) are then selectable in the Monitor control panel or control strip.