Front Panel Connector (J9D2); States For A One Color Power Led - Intel D850GB Technical Product Specification

2.8.3.2 Front Panel Connector
This section describes the functions of the front panel connector. Table 46 lists the signal names
of the front panel connector.
Table 46.

Front Panel Connector (J9D2)

Pin Signal
1 HD_PWR
3 HAD#
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 D850GB 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 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 one- or two-colored LED. Table 47 shows the possible states
for a one-colored LED. Table 48 shows the possible states for a two-colored LED.
Table 47.

States for a One Color 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 active LED
Ground
In Reset switch
Out IR Power
In Reserved
Ground
Out Reserved
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 0, page 25
Technical Reference
Description
Front panel green
LED
Front panel yellow
LED
Power switch
Ground
Ground
Not connected
Power
67