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22 IB850 User’s Manual
Signal Name Pin
Pin Signal Name
Vcc 1 5 Ground
USB2- 2 6 USB3+
USB2+ 3 7 USB3-
CN3
Ground 4 8 Vcc
J3: CPU Fan Power Connector
J3 is a 3-pin header for the CPU fan. The fan must be a 12V fan.
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection
J7: External ATX Power Connector
Pin # Signal Name
1 Ground
2 PS-ON (soft on/off)
3 5VSB (Standby +5V)
J8, J9: System Fan Power Connector
J8 and J9 are 3-pin headers for system fans. The fan must be a 12V fan.
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection