Intel Desktop Board DB75EN Technical Product Specification
52
2.2.2.4
Front Panel Header
This section describes the functions of the front panel header. Table 26 lists the signal
names of the front panel header. Figure 12 is a connection diagram for the front panel
header.
Table 26. Front Panel Header
Pin Signal Name
Description
Pin Signal Name
Description
1
HDD_POWER_LED
Pull-up resistor
(750 Ω) to +5V
2
POWER_LED_MAIN
[Out] Front panel LED
(main color)
3
HDD_LED#
[Out] Hard disk
activity LED
4
POWER_LED_ALT
[Out] Front panel LED
(alt color)
5
GROUND
Ground
6
POWER_SWITCH#
[In] Power switch
7
RESET_SWITCH#
[In] Reset switch
8
GROUND
Ground
9
+5V_DC
Power
10
Key
No pin
Figure 12. Connection Diagram for Front Panel Header
2.2.2.4.1
Hard Drive Activity LED Header
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. Proper LED function requires a SATA hard
drive or optical drive connected to an onboard SATA connector.
2.2.2.4.2
Reset Switch Header
Pins 5 and 7 can be connected to a momentary single pole, single throw (SPST) type
switch that is normally open. When the switch is closed, the board resets and runs the
POST.
Содержание DB75EN
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