ASRock IMB-770 manual USB 3.0 Header

HDLED (Hard Drive Activity LED):

Connect to the hard drive activity LED on the chassis front panel. The LED is on when the hard drive is reading or writing data.

The front panel design may differ by chassis. A front panel module mainly consists of power switch, reset switch, power LED, hard drive activity LED, speaker and etc. When connecting your chassis front panel module to this header, make sure the wire assignments and the pin assign-ments are matched correctly.

Print Port Header	AFD#
(25-pin LPT1)	ERROR#	GND
	SLIN#
	PINIT#
(see p.8, No. 33)	1
		SPD7
	SPD6 ACK#
	SPD5	BUSY
	SPD4	PE
	SPD3	SLCT
	SPD2
	SPD1
	SPD0
	STB#

This is an interface for print port cable that allows convenient connection of printer devices.

USB 2.0 Headers (USB12: see p.8, No. 34) (9-pin USB8_9: see p.8, No. 37)

(9-pin USB10_11: see p.8, No. 36)

USB 3.0 Header		PAIntAD-	GND	PAIntASSTX+	PAIntASSTX-	GND	PAIntASSRX+	PAIntASSRX-	Vbus
	PAIntAD+
(19-pin USB3_2_3)
(see p.8 No. 35)

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

Chassis Intrusion Header

(2-pin CI2: see p.8, No. 38)

(2-pin CI1: see p.8, No. 41)

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

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.

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.

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