ASRock P75 Pro3 ATX 12V Power Connector Please connect an ATX, Pin ATX12V1, Pin CI1 See p.2, No

ATX 12V Power Connector	Please connect an ATX 12V
(4-pin ATX12V1)	power supply to this connector.
(see p.2, No. 3)

Chassis Intrusion Header

(2-pin CI1)	1
(see p.2, No. 23)		GND
	Signal

This motherboard supports CASE OPEN detection feature that detects if the chassis cover has been removed. This feature requires a chassis with chassis intrusion detection design.

HDMI_SPDIF Header

(2-pin HDMI_SPDIF1)

(see p.2, No. 30)

1

GND

SPDIFOUT

HDMI_SPDIF header, providing SPDIF audio output to HDMI VGA card, allows the system to connect HDMI Digital TV/ projector/LCD devices. Please connect the HDMI_SPDIF connector of HDMI VGA card to this header.

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ASRock P75 Pro3 Motherboard