ASRock H77 Pro4/MVP [34/72] System panel header this header accommodates

1. High Denition Audio supports Jack Sensing, but the panel wire on the

chassis must support HDA to function correctly. Please follow the

instruction in our manual and chassis manual to install your system.

2. If you use AC’97 audio panel, please install it to the front panel audio

header as below:

A. Connect Mic_IN (MIC) to MIC2_L.

B. Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L.

C. Connect Ground (GND) to Ground (GND).

D. MIC_RET and OUT_RET are for HD audio panel only. You don’t need

to connect them for AC’97 audio panel.

E. To activate the front mic.

For Windows

XP / XP 64-bit OS:

Select “Mixer”. Select “Recorder”. Then click “FrontMic”.

For Windows

7 / 7 64-bit / Vista

/ Vista

64-bit OS:

Go to the “FrontMic” Tab in the Realtek Control panel. Adjust

“Recording Volume”.

System Panel Header This header accommodates

(9-pin PANEL1)

several system front panel

(see p.13, No. 20)

functions.

Connect the power switch, reset switch and system status indicator on the

chassis to this header according to the pin assignments below. Note the

positive and negative pins before connecting the cables.

PWRBTN (Power Switch):

Connect to the power switch on the chassis front panel. You may congure

the way to turn off your system using the power switch.

RESET (Reset Switch):

Connect to the reset switch on the chassis front panel. Press the reset

switch to restart the computer if the computer freezes and fails to perform a

normal restart.

PLED (System Power LED):

Connect to the power status indicator on the chassis front panel. The LED

is on when the system is operating. The LED keeps blinking when the sys-

tem 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.