ASROCK 939NF6G-VSTA Handbuch Seite 17

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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. Enter BIOS Setup Utility. Enter Advanced Settings, and then select
Chipset Configuration. Set the Front Panel Control option from
[Auto] to [Enabled].
F. Enter Windows system. Click the icon on the lower right hand
taskbar to enter Realtek HD Audio Manager. Click "Audio I/O", select
"Connector Settings"
detection", and save the change by clicking "OK".
System Panel Header
(9-pin PANEL1)
(see p.2 No. 16)
Chassis Speaker Header
(4-pin SPEAKER 1)
(see p.2 No. 19)
Chassis Fan Connector
(3-pin CHA_FAN1)
(see p.2 No. 17)
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.2 No. 5)
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin
CPU fan still can work successfully even without the fan speed control function.
If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this
motherboard, please connect it to Pin 1-3.
ATX Power Connector
(20-pin ATXPWR1)
(see p.2 No. 31)
ASRock
manuals search engine
, choose "Disable front panel jack
This header accommodates
several system front panel
functions.
Please connect the chassis
speaker to this header.
Please connect a chassis fan
cable to this connector and
match the black wire to the
ground pin.
Please connect the CPU fan
cable to this connector and
match the black wire to the
ground pin.
1 2 3 4
Pin 1-3 Connected
3-Pin Fan Installation
Please connect an ATX power
supply to this connector.
939NF6G-VSTA Motherboard
1 7 1 7 1 7
1 7 1 7