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Overview of Components Overview of Components
EZ Debug LED
These LEDs indicate the status of the motherboard.
CPU - indicates CPU is not detected or fail.
DRAM - indicates DRAM is not detected or fail.
VGA - indicates GPU is not detected or fail.
BOOT - indicates booting device is not detected or fail.
CPU_FAN1, PUMP_FAN1, SYS_FAN1~4: Fan Connectors
Fan connectors are classified as PWM (Pulse Width Modulation) Mode. 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.
PWM Mode pin definition
1 Ground 2 +12V
3 Sense 4
Speed Control
Signal
There are gradient points of the fan speed that allow you to
adjust fan speed in relation to CPU temperature.
1
SYS_FAN2/ 3
1
CPU_FAN1/ PUMP_FAN1/
SYS_FAN1/ SYS_FAN4
Pin definition of fan connectors
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