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I/O Connectors
X
SMBus
„ SMBus
6
5
2
1
The SMBus (System Management Bus) connector is used to connect the SMBus device. It is a
multiple device bus that allows multiple chips to connect to the same bus and enable each one
to act as a master by initiating data transfer.
„ SMBus Pin Assignment
Pin Assignment
1
N.C.
3
SMBus_DATA
5
GND
User's Manual | GHF51
Top View
Pin Assignment
2
SMBus_Alert
4
SMBus_Clock
6
3V3SB
I/O Connectors
X
Front Panel
„ Front Panel
6
5
2
1
RESET - Reset Switch
This switch allows you to reboot without having to power off the system.
Power/Standby LED
When the system's power is on, this LED will light up. When the system is in the S1 (POS -
Power On Suspend) state, it will blink at 1-second intervals. When the system is in the S3 (STR
- Suspend To RAM) state, it will blink at 4-second intervals.
Power Button
This switch is used to power on or off the system.
„ Front Panel Pin Assignment
Pin Assignment
1
N.C.
3
Power LED
5
Power LED (3V3SB)
Chapter 2
HARDWARE INSTALLATION
Top View
Pin Assignment
2
Reset
4
GND
6
Power Button
11
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