Fujitsu Siemens Computers D1241 User Manual page 33

3. HARDWARE SETUP
16) SMBus Connector (5-1 pin SMB)
This connector allows you to connect SMBus (System Management Bus) de-
vices. SMBus devices communicate by means of the SMBus with an SMBus
host and/or other SMBus devices. SMBus is a specific implementation of an I
bus, which is a multi-device bus; that is, multiple chips can be connected to the
same bus and each one can act as a master by initiating data transfer.
R
CUR-DLS
CUR-DLS SMBus Connector
The following PANEL illustration is used for items 17–26 (next page).
R
CUR-DLS
CUR-DLS System Panel Connectors
17) NIC Activity LED (2-pin)
This shows the status of the NIC through a panel-mounted LED.
18) Status LED (2-pin)
This shows the system status as programmed through ASIC.
19) System Management Interrupt Lead (2-pin)
This allows the user to manually place the system into a suspend mode or "Green"
mode where system activity will be instantly decreased to save electricity and
expand the life of certain components when the system is not in use. This 2-pin
connector (see the preceding figure) connects to the case-mounted suspend switch.
+5V
SMBDATA
Ground
SMBCLK
SMB
Pin
1 & 12
3 & 4
4 & 5
11 20
6 & 7*
7* & 8
1 10
9 & 10
11 & 13
15* & 16
17 & 20
18 & 19
* Shared
User's Manual
1
Connector
NIC Activity LED
Status LED
SMI Lead
Power Button
Chassis Intrusion
Reset Switch
Power LED
NMI Button
Speaker
HDD Access LED
2
C
29