ASRock FM2A85X Pro manual Serial port Header

Serial port Header	This COM1 header supports a
(9-pin COM1)	serial port module.
(see p.13 No. 28)

HDMI_SPDIF Header	HDMI_SPDIF header, providing
(2-pin HDMI_SPDIF1)	SPDIF audio output to HDMI
(see p.13 No. 29)	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.

USB 3.0 Header

(19-pin USB3_2_3)	ID
(see p.13 No. 8)	_D+
	_P D-
	IntA IntA_P_ GND IntA_P_SSTX+ IntA_P_SSTX- GND IntA_P_SSRX+ IntA_P_SSRX- Vbus

1

								P D+
							D-
						GND IntA P_		IntA_
					IntA P SSTX+
				IntA P SSTX-
			GND
		IntA P SSRX+
	IntA P SSRX-
Vbus

Besides two default USB 3.0 ports on the I/O panel, there is one USB 3.0 header on this motherboard. This USB 3.0 header can support two USB 3.0 ports.

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