ASRock Z77 OC Formula Chassis Speaker Header Please connect the chassis, Speaker to this header

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system is in S1/S3 sleep state. The LED is off when the system is in S4 sleep state or powered off (S5).

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.

Chassis Speaker Header				Please connect the chassis
(4-pin SPEAKER 1)				speaker to this header.
(see p.2, No. 23)
Power LED Header				Please connect the chassis
(3-pin PLED1)				power LED to this header to
(see p.2, No. 24)				indicate system power status.
				The LED is on when the system
				is operating. The LED keeps
				blinking in S1/S3 state. The
				LED is off in S4 state or S5
				state (power off).
Chassis, Power and MOS Fan				Please connect the fan cables
Connectors	CHA_FAN_SPEED			to the fan connectors and match
(4-pin CHA_FAN1)	+12V FAN_SPEED_CONTROL			the black wire to the ground pin.
	GND
(see p.2, No. 37)
(3-pin CHA_FAN2)
(see p.2, No. 33)
(3-pin CHA_FAN3)	CHA_FAN_SPEED
(see p.2, No. 17)		+12V
			GND
(3-pin CHA_FAN4)		GND
(see p.2, No. 49)		+12V
		CHA_FAN_SPEED

(3-pin PWR_FAN1)

(see p.2, No. 16)

(3-pin MOS_FAN1)

(see p.2, No. 50)

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ASRock Z77 OC Formula Motherboard