MSI MEG Z790 ACE MAX User Manual 1 - Page 53

CPU_FAN1, PUMP_FAN1~2, SYS_FAN1~5: Fan Connectors

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CPU_FAN1, PUMP_FAN1~2, 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 PUMP_FAN1 1 1 SYS_FAN1 PWM Mode pin definition Pin Signal Name Pin Signal Name 1 Ground 2 +12V SYS_FAN5 SYS_FAN4 SYS_FAN2 SYS_FAN3 PUMP_FAN2 3 Sense 4 DC Mode pin definition Speed Control Signal Pin Signal Name Pin Signal Name 1 Ground 2 Voltage Control 3 Sense 4 NC Fan connector specifications Connector Default fan mode CPU_FAN1 Auto mode PUMP_FAN1~2 Auto mode SYS_FAN1~5 DC mode Max. current 3A 3A 2A Max. power 36W 36W 24W 53

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53
CPU_FAN1, PUMP_FAN1~2, 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_FAN1
SYS_FAN2
SYS_FAN4
SYS_FAN3
PUMP_FAN1
PUMP_FAN2
SYS_FAN5
1
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
3A
36W
PUMP_FAN1~2
Auto mode
3A
36W
SYS_FAN1~5
DC mode
2A
24W