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Chapter 2
- Hardware Installation
SD170
19
SMBus Connector
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.
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SMBus Connector
▼
SMBus Pin Assignment
Pin Assignment
Pin Assignment
1
3V3SB
2
GND
3
SMBus_Clock
4
SMBus_DATA
5
SMBus_Alert
6
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1
2
5
▼
Front Panel Connector
HD-LED
RESET
PWR-LED
ATX-SW
2
1
11 12
HDD-LED - Hard Disk Drive LED
Lighting of the LED indicates that the hard drive is being accessed.
RESET - Reset Switch
This switch allows you to reboot without having to power off the system.
PWR-LED - 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.
ATX-SW - ATX Power Switch
This switch is used to power on or off the system.
▼
Front Panel Pin Assignment
Pin Assignment
Pin Assignment
1
N.C.
PWR-LED
2
LED Power
HD-LED
3
HDD Power
4
LED Power
5
Signal
6
Signal
RESET
7
Ground
ATX-SW
8
Ground
9
Signal
10
Signal
11
N.C.
12
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Front Panel
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Internal I/O Connectors
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Internal I/O Connectors
