Connection Diagram For Front Panel Connector; Front Panel Connector - Intel BOXD845GLVAL - 845GL CEL/P4 400MHZ FSB UATX Specification

2.8.3.1

Front Panel Connector

This section describes the functions of the front panel connector. Table 30 lists the signal names of
the front panel connector. Figure 8 is a connection diagram for the front panel connector.
Table 30. Front Panel Connector
Pin Signal
Hard Drive Activity LED
1 HD_PWR
3 HAD#
5 Ground
7 FP_RESET#
9 +5 V
Hard Drive
Activity LED
2.8.3.1.1 Hard Drive Activity LED Connector
Pins 1 and 3 can be connected to an LED to provide a visual indicator that data is being read from
or written to a hard drive. For the LED to function properly, an IDE drive must be connected to the
onboard IDE interface.
2.8.3.1.2 Reset Switch Connector
Pins 5 and 7 can be connected to a momentary SPST type switch that is normally open. When the
switch is closed, the Desktop Board resets and runs the POST.
2.8.3.1.3 Power/Sleep/Message Waiting LED Connector
Pins 2 and 4 can be connected to a one- or two-color LED. Table 31 shows the possible states for a
one-color LED. Table 32 shows the possible states for a two-color LED.
In/Out Description
Out Hard disk LED pull-up
(750 Ω) to +5 V
Out Hard disk active LED
Reset Switch
Ground
In Reset switch
Out Power
+ + + +
1
− − − −
3
5
Reset
Switch
7
9
+5 V DC
Figure 8. Connection Diagram for Front Panel Connector
Pin Signal In/Out
Power LED
2 HDR_BLNK_ Out
GRN
4 HDR_BLNK_ Out
YEL
On/Off Switch
6 SWITCH_ON# In
8 Ground
10 No connect
Single-colored
Power LED
+ + + +
2
− − − −
4
6
Power
Switch
8
N/C
Technical Reference
Description
Front panel green
LED
Front panel yellow
LED
Power switch
Ground
Not connected
Dual-colored
Power LED
− − − −
+ + + +
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