Gigabyte GA-SBCAP3350 User Manual page 17

21) COMA_PW/COMB_PW/COMC_PW/COMD_PW (Serial Port Header Power Select
Jumpers)
The power select jumpers are used to select serial port power.
1-2 Close: Set to 12V.
1
2-3 Close: Set to 5V. (Default setting)
1
22) SMBUS (System Management Bus)
1
23) I2C (Inter-Integrated Circuit)
1
Pin No. Definition
1 SMB_CLK
2 SMB_DATA
3 GND
Pin No. Definition
1 I2C_SCL
2 I2C_SDA
3 GND
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