MSI MPG Z790 CARBON MAX WIFI User Manual 1 - Page 45

CPU_FAN1, PUMP_FAN1, SYS_FAN1~5: Fan Connectors

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CPU_FAN1, PUMP_FAN1, SYS_FAN1~5: Fan Connectors Fan connectors can be classified as PWM (Pulse Width Modulation) Mode or DC Mode. PWM Mode fan connectors provide constant 12V output and adjust fan speed with speed control signal. DC Mode fan connectors control fan speed by changing voltage. The auto mode fan connectors can automatically detect PWM and DC mode. You can control fans in BIOS> HARDWARE MONITOR panel. It allows you to set DC or PWM to your fan type. Check the Smart Fan Mode, the fan speed will change according to the CPU or system temperature. Uncheck the Smart Fan Mode, the fan will spin at maximum speed. ⚠ Important Make sure fans are working properly after switching the PWM/ DC mode. CPU_FAN1 1 1 PUMP_FAN1 SYS_FAN5 SYS_FAN4 PWM Mode pin definition Pin Signal Name Pin Signal Name 1 Ground 2 +12V 3 Sense 4 Speed Control Signal SYS_FAN3 SYS_FAN1 SYS_FAN2 DC Mode pin definition Pin Signal Name Pin 1 Ground 2 3 Sense 4 Signal Name Voltage Control NC Fan connector specifications Connector Default fan mode CPU_FAN1 Auto mode PUMP_FAN1 PWM mode SYS_FAN1~5 DC mode Max. current 2A 3A 1A Max. power 24W 36W 12W 45

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CPU_FAN1, PUMP_FAN1, SYS_FAN1~5: Fan Connectors
Fan connectors can be classified as PWM (Pulse Width Modulation) Mode or DC Mode.
PWM Mode fan connectors provide constant 12V output and adjust fan speed with
speed control signal. DC Mode fan connectors control fan speed by changing voltage.
The auto mode fan connectors can automatically detect PWM and DC mode.
You can control fans in
BIOS> HARDWARE MONITOR
panel. It allows you to set DC
or PWM to your fan type. Check the
Smart Fan Mode
, the fan speed will change
according to the CPU or system temperature. Uncheck the
Smart Fan Mode
, the fan
will spin at maximum speed.
⚠
Important
Make sure fans are working properly after switching the PWM/ DC mode.
CPU_FAN1
SYS_FAN2
SYS_FAN1
SYS_FAN3
PUMP_FAN1
SYS_FAN5
SYS_FAN4
1
PWM Mode pin definition
Pin
Signal Name
Pin
Signal Name
1
Ground
2
+12V
3
Sense
4
Speed Control Signal
DC Mode pin definition
Pin
Signal Name
Pin
Signal Name
1
Ground
2
Voltage Control
3
Sense
4
NC
Fan connector specifications
Connector
Default fan mode
Max. current
Max. power
CPU_FAN1
Auto mode
2A
24W
PUMP_FAN1
PWM mode
3A
36W
SYS_FAN1~5
DC mode
1A
12W
1