19) I2C (Inter-Integrated Circuit)
This header provides the I2C signals.
Pin No. Denition
1 I2C_SCL
2 I2C_SDA
3 GND
1
20) SMBUS (System Management Bus)
This header provides the SMBUS signals.
Pin No. Denition
1 SMB_CLK
2 SMB_DATA
3 GND
1
17) GPIO (GPIO Header)
Use this jumper to set the GPIO status of the LPT_GPIO header to HIGH or LOW.
18) AT_ATX (ATX Power Switch Jumper)
This jumper allows you to select AT or ATX power mode.
1
1
1-2 Close: AT mode.
2-3 Close: ATX mode. (Default)
Pin No. Denition Pin No. Denition
1 IO_GP70 6 IO_GP75
2 IO_GP71 7 IO_GP76
3 IO_GP72 8 IO_GP77
4 IO_GP73 9 GP_IN_OUT
5 IO_GP74 10 GND
109
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