ASRock 990FX Extreme4 Serial ATA3 Connectors, USB 2.0 Headers, Ports on the I/O panel, there is

Serial ATA3 Connectors

(SATA3_1_2: see p.12, No. 21)

(SATA3_3_4: see p.12, No. 20)

(SATA3_5_6: see p.12, No. 19)

(SATA3_7: see p.12, No. 32)

(SATA3_8: see p.12, No. 33)

SATA3_1_2 SATA3_3_4 SATA3_5_6

These eight Serial ATA3 (SATA3) connectors support SATA data cables for internal storage devices. The current SATA3 interface allows up to

6.0Gb/s data transfer rate. If you install the HDD on the eSATA port on the rear I/O, the internal SATA3_8 will not function.

SATA3_8 SATA3_7

USB 2.0 Headers

(9-pin USB2_3)	DUMMY
(see p.12 No. 14)	GND	GND
	P+3	P+2
	P-3	P-2
	USB_PWR	USB_PWR
		1

Besides six default USB 2.0 ports on the I/O panel, there are two USB 2.0 headers on this motherboard. Each USB 2.0 header can support two USB 2.0 ports.

(9-pin USB8_9)	DUMMY
	GND	GND
(see p.12 No. 13)
	P+9	P+8
	P-9	P-8
	USB_PWR	USB_PWR

	1
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.12 No. 28)	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.12 No. 44)	and receiving infrared module.

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