Apple WS 8150 manual Pin Description

Basics		HDI-45 Pinouts - 9
	Pin	Description
	11	Green video output (75Ω)
	12	Video input power ground
	13	Power for camera +5 V
	14	Reserved
	15	Reserved
	16	Reserved
	17	Reserved
	18	Monitor ID sense line 3
	19	S-video input shield
	20	S-video input luminance (Y)
	21	S-video input chroma (C)