Intel S975XBX2 Product Specification - Page 63

Front Panel Header

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Technical Reference 2.7.2.4 Front Panel Header This section describes the functions of the front panel header. Table 29 lists the signal names of the front panel header. Figure 17 is a connection diagram for the front panel header. Table 29. Front Panel Header Pin Signal In/ Description Pin Out Hard Drive Activity LED [Orange] 1 HD_PWR Out Hard disk LED pull-up 2 to +5 V 3 HAD# Out Hard disk active LED 4 Reset Switch [Blue] 5 Ground Ground 6 7 FP_RESET# In Reset switch 8 Power 9 +5 V Power 10 Signal In/ Out Description Power LED [Green] HDR_BLNK_ Out GRN Front panel green LED HDR_BLNK_ Out YEL Front panel yellow LED On/Off Switch [Red] FPBUT_IN In Power switch Ground Ground Not Connected N/C Not connected Dualcolored Power LED - + N/C Power Switch Singlecolored Power LED + - 9 87 65 43 21 +5 V DC Reset Switch - Hard Drive Activity LED + OM18331 Figure 17. Connection Diagram for Front Panel Header 63

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Technical Reference
63
2.7.2.4
Front Panel Header
This section describes the functions of the front panel header.
Table 29 lists the signal
names of the front panel header.
Figure 17 is a connection diagram for the front panel
header.
Table 29. Front Panel Header
Pin
Signal
In/
Out
Description
Pin
Signal
In/
Out
Description
Hard Drive Activity LED
[Orange]
Power LED
[Green]
1
HD_PWR
Out
Hard disk LED pull-up
to +5 V
2
HDR_BLNK_
GRN
Out
Front panel green
LED
3
HAD#
Out
Hard disk active LED
4
HDR_BLNK_
YEL
Out
Front panel yellow
LED
Reset Switch
[Blue]
On/Off Switch
[Red]
5
Ground
Ground
6
FPBUT_IN
In
Power switch
7
FP_RESET#
In
Reset switch
8
Ground
Ground
Power
Not Connected
9
+5 V
Power
10
N/C
Not connected
OM18331
Hard Drive
Activity LED
Reset
Switch
+5 V DC
N/C
Power
Switch
+
-
+
-
1
9
8
7
6
5
4
2
3
Dual-
colored
Power LED
Single-
colored
Power LED
+
-
Figure 17.
Connection Diagram for Front Panel Header