Gigabyte GA-IMB1900TN User Manual - Page 21

CLR_CMOS Clear CMOS Jumper, I2C Inter-Integrated Circuit, SMBUS System Management Bus, AT_ATX ATX

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26) GPIO_SET (GPIO Status Configuration Jumper) Use this jumper to set the GPIO status of the LPT_GPIO header to HIGH or LOW. 1 1-2 Close: Set to HIGH level (Default) 1 2-3 Close: Set to LOW level. 27) AT_ATX (ATX Power Switch Jumper) This jumper allows you to select ATX or AT power mode. 1 1-2 Close: AT mode. 1 2-3 Close: ATX mode. (Default) 28) CLR_CMOS (Clear CMOS Jumper) Use this jumper to clear the BIOS configuration and reset the CMOS values to factory defaults. To clear the CMOS values, use a metal object like a screwdriver to touch the two pins for a few seconds. Open: Normal Short: Clear CMOS Values •• Always turn off your computer and unplug the power cord from the power outlet before clearing the CMOS values. •• After system restart, go to BIOS Setup to load factory defaults (select Load Optimized Defaults) or manually configure the BIOS settings (refer to Chapter 2, "BIOS Setup," for BIOS configurations). 29) SMBUS (System Management Bus) This header provides the SMBUS signals. Pin No. Definition 1 1 SMB_CLK 2 SMB_DATA 3 GND 30) I2C (Inter-Integrated Circuit) This header provides the I2C signals. Pin No. Definition 1 1 I2C_SCL 2 I2C_SDA 3 GND - 21 -

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26) GPIO_SET (GPIO Status Configuration Jumper)
Use this jumper to set the GPIO status of the LPT_GPIO header to HIGH or LOW.
1-2 Close: Set to HIGH level (Default)
2-3 Close: Set to LOW level.
1
1
28) CLR_CMOS (Clear CMOS Jumper)
Use this jumper to clear the BIOS configuration and reset the CMOS values to factory defaults. To clear
the CMOS values, use a metal object like a screwdriver to touch the two pins for a few seconds.
•
Always turn off your computer and unplug the power cord from the power outlet before clearing
the CMOS values.
•
After system restart, go to BIOS Setup to load factory defaults (select Load Optimized Defaults) or
manually configure the BIOS settings (refer to Chapter 2, "BIOS Setup," for BIOS configurations).
Open: Normal
Short: Clear CMOS Values
30) I2C (Inter-Integrated Circuit)
This header provides the I2C signals.
Pin No.
Definition
1
I2C_SCL
2
I2C_SDA
3
GND
1
29) SMBUS (System Management Bus)
This header provides the SMBUS signals.
Pin No.
Definition
1
SMB_CLK
2
SMB_DATA
3
GND
1
27) AT_ATX (ATX Power Switch Jumper)
This jumper allows you to select ATX or AT power mode.
1
1
1-2 Close: AT mode.
2-3 Close: ATX mode. (Default)
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