ASRock H77TM-ITX manual Onboard Headers and Connectors, USB 2.0 Headers

2.8 Onboard Headers and Connectors

Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over these headers and connectors. Plac- ing jumper caps over the headers and connectors will cause permanent damage to the motherboard!

USB 2.0 Headers	DUMMY
(9-pin USB4_5)	GND	GND
	+B	+A
(see p.13/15/17, No. 20)	-B	-A
	USB_PWR	USB_PWR
		1
	USB_PWR
(9-pin USB6_7)	-B	GND
(see p.13/15/17, No. 7)		+B
		DUMMY
	1
		GND
		+A
	-A
	USB_PWR
(4-pin USB8)	GND	+5VDC
(see p.13/15/17, No. 3)		1
		+D -D

Besides two default USB 2.0 ports on the I/O panel, there are three USB 2.0 headers and one USB port on this motherboard. Each USB

2.0header can support two USB 2.0 ports.

USB 3.0 Header

(19-pin USB3_0_1) (see p.13/15/17, No. 9)

IntA PA D+ IntA PA D- GND IntA PA SSTX+ IntA PA SSTX- GND IntA PA SSRX+ IntA PA SSRX- Vbus

1
Dummy	IntA PB D+	IntA PB D-	GND	IntA PB SSTX+	IntA PB SSTX-	GND	IntA PB SSRX+	IntA PB SSRX-	Vbus

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

3.0header can support two USB 2.0 ports.

Consumer Infrared Module Header

(7-pin CIR1)

(see p.13/15/17, No. 5)

CIR input +5VA

Learn-in

LED

1

+5VA

NC

GND

This header can be used t o c o n n e c t t h e r e m o t e controller receiver.

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