Intel D815EGEWLU Product Specification - Page 59

Front Panel Connector

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Technical Reference 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 In/Out Description Pin Signal In/Out Description 1 HD_PWR Out Hard disk LED pull- 2 up (330 Ω) to +5 V HDR_BLNK_ Out GRN Front panel green LED 3 I# Out Hard disk activity 4 HDR_BLNK_ Out Front panel yellow LED YEL LED 5 GND Ground 6 FPBUT_IN In Power switch 7 FP_RESET# In Reset switch 8 GND Ground 9 +5 V Out Power 10 N/C Not connected 11 Reserved Not connected 12 GND Ground 13 GND Ground 14 (pin removed) Not connected 15 Reserved Not connected 16 +5 V Out Power 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 Refer to Section 2.8.2.4, page 57 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 Description Off Power off/sleeping Steady Green Running Blinking Green Running/message waiting 59

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Technical Reference
59
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
In/Out
Description
Pin
Signal
In/Out
Description
1
HD_PWR
Out
Hard disk LED pull-
up (330
Ω
) to +5 V
2
HDR_BLNK_
GRN
Out
Front panel green
LED
3
I#
Out
Hard disk activity
LED
4
HDR_BLNK_
YEL
Out
Front panel yellow
LED
5
GND
Ground
6
FPBUT_IN
In
Power switch
7
FP_RESET#
In
Reset switch
8
GND
Ground
9
+5 V
Out
Power
10
N/C
Not connected
11
Reserved
Not connected
12
GND
Ground
13
GND
Ground
14
(pin removed)
Not connected
15
Reserved
Not connected
16
+5 V
Out
Power
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
Refer to
The optional SCSI hard drive activity LED connector
Section 2.8.2.4, page 57
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
Description
Off
Power off/sleeping
Steady Green
Running
Blinking Green
Running/message waiting