The Apple Mini-DVI to VGA Adapter was specifically designed for use with the latest 12-inch PowerBook G4 (models introduced in September 2003). Connect the adapter to the Mini-DVI port of the PowerBook G4 and the VGA end of the adapter to an external VGA monitor or projector. Both video-mirroring or dual display modes are supported. Ultra High Density, Triple Shielded, and high Intensity Twisted Pair Cable is used for the most stabilized impedance and highest uncompressed digital video signal transfer available. It maintains high bandwidth and maximum data signal integrity. Made with lead-free and environmentally safe materials is for a better world. Apple iMac Macbooks Powerbook G4 Please Note: There are no audio signals on the Mini-DVI connector. You'll have to run a separate audio cable from the iMac's audio output to the TV.