ASROCK H61M-DGS User Manual page 26

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
(4-pin SPEAKER 1)
(see p.12 No. 13)
Chassis and Power Fan Connectors
CHA_FAN_SPEED
(4-pin CHA_FAN1)
(see p.12 No. 9)
(3-pin PWR_FAN1)
(see p.12 No. 23)
CPU Fan Connectors
(4-pin CPU_FAN1)
(see p.12 No. 3)
FAN_SPEED_CONTROL
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
(24-pin ATXPWR1)
(see p.12 No. 4)
Please connect the chassis
speaker to this header.
Please connect the fan cables
to the fan connectors and
+12V
FAN_SPEED_CONTROL
GND
match the black wire to the
ground pin.
Please connect the CPU fan
4 3 2 1
cable to the connector and
GND
match the black wire to the
+12V
CPU_FAN_SPEED
ground pin.
Pin 1-3 Connected
3-Pin Fan Installation
Please connect an ATX power
12 24
supply to this connector.
1 13
26