Apple Display Connector

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Apple Display Connector

ADC monitor connector
Type	analog/digital video connector + USB
Production history
Designer	Apple Computer
Designed	1998
Manufacturer	Apple Computer
Superseded	DB-15
Superseded by	DVI (June 2004)
General specifications
Hot pluggable	Yes
External	Yes
Pins	35
Electrical
Max. voltage	25 V
Max. current	4.0 A
Pinout
Receptacle (at host)
Pin 1	25 V Supply	power
Pin 2	25 V Supply	power
Pin 3	LED	data
Pin 4	TMDS Data0–	data
Pin 5	TMDS Data0+	data
Pin 6	TMDS Data0/5 Shield	data
Pin 7	TMDS Data5–	data
Pin 8	TMDS Data5+	data
Pin 9	DDC Data	data
Pin 10	Vsync	data
Pin 11	25 V Return	power
Pin 12	25 V Return	power
Pin 13	Soft Power	power
Pin 14	TMDS Data1–	data
Pin 15	TMDS Data1+	data
Pin 16	TMDS Data1/3 Shield	data
Pin 17	TMDS Data3–	data
Pin 18	TMDS Data3+	data
Pin 19	DDC CLock	data
Pin 20	Clock Return	data
Pin 21	USB Data+	data
Pin 22	USB Data–	data
Pin 23	USB Return	data
Pin 24	TMDS Data2–	data
Pin 25	TMDS Data2+	data
Pin 26	TMDS Data2/4 Shield	data
Pin 27	TMDS Data4–	data
Pin 28	TMDS Data4+	data
Pin 29	Clock+	data
Pin 30	Clock-	data
C1	data	Analog Blue Video
C2	data	Analog Green Video
C3	data	Analog Horizontal Sync
C4	data	Analog Red Video
C5	data	Analog RGB Return and DDC Return

The Apple Display Connector (ADC) is a display and data connector developed by Apple, Inc. as a proprietary modification of the DVI connector. ADC combines analog and digital video signals, USB, and power all in one cable. It was used in later versions of the Apple Studio Display, including the final 17" CRT model, and most versions of the widescreen Apple Cinema Display, after which Apple adopted standard DVI connectors on later models.

ADC was first implemented in the July 2000 Power Mac G4 and G4 Cube, but disappeared from displays when Apple introduced the aluminum-clad 20" (51 cm), 23" (58 cm), and 30" (76 cm) Apple Cinema Displays in June 2004, which feature separate DVI, USB and FireWire connectors, and their own power supplies. An ADC port was still included with the Power Mac G5 until April 2005, when new models meant the only remaining Apple product with an ADC interface was the single processor Power Mac G5 introduced in October 2004. This single processor Power Mac G5 was discontinued soon after in June 2005.