Technical Reference
49
2.2.2.4
Front Panel Header
This section describes the functions of the front panel header. Table 23 lists the signal
names of the front panel header. Figure 11 is a connection diagram for the front panel
header.
Table 23. Front Panel Header
Pin
Signal
In/
Out
Description
Pin
Signal
In/
Out
Description
Hard Drive Activity LED
Power LED
1
HD_PWR
Out
Hard disk LED
pull-up to +5 V
2
Out
Front panel green
LED
3
HDA#
Out
Hard disk active
LED
4
FP_LED−
Out
Front panel yellow
LED
Reset Switch
On/Off Switch
5
Ground
Ground
6
PWR#
In
Power switch
7
FP_RESET#
In
Reset switch
8
Ground
Ground
Power
Not Connected
9
+5 V
Power
10
N/C
Not connected
Figure 11. 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 an internal storage device. Proper LED function requires
a SATA hard drive or optical drive connected to an onboard SATA connector.
