The 845G MAINBOARD Series
Page 16
2.4.5. ATX Power Supply Connectors
Connector: CN15-A/CN15-B/CN15-D
Type: 2x10/2x2/1x4
The mainboard comes with three onboard
power supply connectors labeled CN15-A,
CN15-B and CN15-D. CN15-A and CN15-B
are regular ATX power supply connectors.
The auxiliary power supply connector
(CN15-D) is for a +12V and +5V power
supply. These increased power supplies
are necessary to provide extra power for
the slot. The ATX 12V power supplies are
all downward compatible with standard
ATX power supplies.
Plug in CN15-D as
long as you find out your power supply
without ATX12 (CN15-B) connection.
Otherwise it is no necessary to use
CN15-D (AUX12V).
2.4.4. CPU Fan, Power Supply Fan and Chassis Fan Connectors
Connector: CN13 (FAN1)/CN17 (FAN2)/CN27 (FAN3)
Type: 3 pin
The cooling fans must be connected to their respective power connectors. If
you have installed the hardware-monitoring feature you will be able to monitor
the rotating speed of the CPU cooling fan in your Windows operating system.
Hardware Installation
Fan Signal
+12V DC
Ground
1 Ground
2 +12V DC
3 Fan Signal
Top View of a Fan Connector
Front View of a Fan Connector
Pin 1 Pin 11
+3.3VDC
+3.3VDC
COM
+5VDC
COM
+5VDC
COM
PWR_OK
+5VSB
+12VDC
+3.3VDC
-12VDC
COM
PS_ON#
COM
COM
COM
-5VDC
+5VDC
+5VDC
ATX Power Supply Connector
Pin 1 Pin 3
COM
COM
+12VDC
+12VDC
ATX12V Power Supply Connector
Auxiliary Power Supply Connector
Pin 4
Pin 3
Pin 2
Pin 1
+5VDC
COM
COM
+12VDC
