ASROCK IMB-140 User Manual page 20

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Chassis Fan Connector
(3-pin CHA_FAN1)
(see p.9 No. 6)
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.9 No. 4)
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.
DC 12V Power Connector
(4-pin DC12V1)
(see p.9 No. 3)
COM port 4,5,6
(10-pin COM4,5,6)
(see p.9 No. 19)
Printer Port Header
(25-pin LPT1)
(see p.9 No. 9)
12V
12V
GND
GND
20
Please connect the fan cable
to the fan connector and
match the black wire to the
ground pin.
Please connect the CPU fan
cable to the connector and
match the black wire to the
ground pin.
Pin 1-3 Connected
3-Pin Fan Installation
Please connect a DC 12V
power supply to this connector.

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