ASRock Z77 Pro4 manual USB 3.0 Header Besides two default USB

(9-pin USB_8_9)

(see p.13, No. 24)

USB 3.0 Header	Besides two default USB 3.0
(19-pin USB3_0_1)	ports on the I/O panel, there is
(see p.13, No. 10)	one USB 3.0 header on this
	motherboard. This USB 3.0
	header can support two USB 3.0
	ports.
Infrared Module Header	This header supports an
(5-pin IR1)	optional wireless transmitting
(see p.13, No. 26)	and receiving infrared module.
Consumer Infrared Module Header	This header can be used to
(4-pin CIR1)	connect the remote controller
(see p.13, No. 25)	receiver.
Front Panel Audio Header	This is an interface for front
(9-pin HD_AUDIO1)	panel audio cable that allows
(see p.13, No. 30)	convenient connection and
	control of audio devices.

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