The HDI-45 was a 45-pin proprietary cable-to-onboard video connector used in the first generation Power Macintosh computers. This connector and the HDI stood for High-Density Interconnect. These connectors were used only in the Power Macintosh 6100, 7100, and 8100, specifically for the Apple AudioVision 14 Display. No other display uses this connector. Other various Apple displays and third-party displays could be used with a special adapter that converts this unusual port to a standard DA-15 connector.
