Intel Desktop Board DB85FL Technical Product Specification
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2.2.2.4
Front Panel Connector
This section describes the functions of the front panel connector. Table 24 lists the
signal names of the front panel connector. Figure 10 is a connection diagram for the
front panel connector.
Table 24. Front Panel Connector
Pin Signal Name
Description
Pin Signal Name
Description
1
HDD_POWER_LED
Pull-up resistor
(750 Ω) to +5 V
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
+5 V_DC
Power
10
Key
No pin
Figure 10. Connection Diagram for Front Panel Connector
2.2.2.4.1
Hard Drive Activity LED
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
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.