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IB865 User’s Manual 21
CN2, CN3: USB Connectors
The following table shows the pin outs of the USB pin headers
connectors. Overall, the two pin headers support four USB ports.
Signal Name Pin Pin Signal Name
Vcc 1 5 Ground
USB0- 2 6 USB1+
USB0+ 3 7 USB1-
CN2
Ground 4 8 Vcc
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
4 Control
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