17
You can adjust fan speed in
PWM Mode fan connectors provide constant 12V output and adjust fan speed with
speed control signal. When you plug a 3-pin (Non-PWM) fan to a fan connector in
PWM mode, the fan speed will always maintain at 100%, which might create a lot of
noise.
1
1 Ground 2 +12V
3 Sense 4 Speed Control Signal
CPU_FAN1 PWM mode 2A 24W
SYS_FAN1 DC mode 1A 12W
1
1 Ground 2 Voltage Control
3 Sense 4 NC
1
2
12
11
1 SPI Power 2 SPI Chip Select
3
Master In Slave Out (SPI
Data)
4
Master Out Slave In (SPI
Data)
5 Reserved 6 SPI Clock
7 Ground 8 SPI Reset
9 Reserved 10 No Pin
11 Reserved 12 Interrupt Request
This connector is for TPM (Trusted Platform Module). Please refer to the TPM
security platform manual for more details and usages.
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