Front Panel Connector; States For A Single-Colored Power Led - Intel D815EGEWLU - P3 Socket 370 MicroATX Motherboard Specification

2.8.3.2

Front Panel Connector

This section describes the functions of the front panel connector. Table 40 lists the signal names
of the front panel connector.
Table 40. Front Panel Connector
Pin Signal
1 HD_PWR
3 I#
5 GND
7 FP_RESET#
9 +5 V
11 Reserved
13 GND
15 Reserved
2.8.3.2.1 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 D815EGEW board resets and runs the POST.
2.8.3.2.2 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. The LED will also show activity for devices connected to the SCSI
hard drive activity LED connector.
For information about
The optional SCSI hard drive activity LED connector
2.8.3.2.3 Power/Sleep/Message Waiting LED Connector
Pins 2 and 4 can be connected to a single-colored or dual-colored LED. Table 41 shows the
possible states for a single-colored LED. Table 42 shows the possible states for a dual-colored
LED.
Table 41.

States for a Single-Colored Power LED

LED State
Off
Steady Green
Blinking Green
In/Out Description
Out Hard disk LED pull-
up (330 Ω) to +5 V
Out Hard disk activity
LED
Ground
In Reset switch
Out Power
Not connected
Ground
Not connected
Description
Power off/sleeping
Running
Running/message waiting
Pin Signal In/Out
2 HDR_BLNK_ Out
GRN
4 HDR_BLNK_ Out
YEL
6 FPBUT_IN In
8 GND
10 N/C
12 GND
14 (pin removed)
16 +5 V Out
Refer to
Section 2.8.2.4, page 57
Technical Reference
Description
Front panel green
LED
Front panel yellow
LED
Power switch
Ground
Not connected
Ground
Not connected
Power
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