ADLINK IMB-M42H - Manual (Page 26)

16 Getting Started
Connect the fan cable to the fan connector and match the black
wire to the ground pin.
Table 2-2: System Fan Connection Options
ATX Power Input Connector (24-pin ATXPWR1)
Please connect an ATX power supply to this
connector.
4-Pin Connection (CHA_FAN1) 3-Pin Connection (CHA_FAN2)
NOTE: NOTE:
While a 24-pin ATX power connector is provided, conventional
20-pin ATX power supply is also supported.
FAN_SPEED_CONTROL
CPU_FAN_SPEED
+12V
GND
CPU_FAN_SPEED
+12V
GND
X
1
12
13
24