Intel Desktop Board DH55HC Technical Product Specification
46
2.2.2.4 Front Panel Header
This section describes the functions of the front panel header. Table 25 lists the signal
names of the front panel header. Figure 11 is a connection diagram for the front panel
header.
Table 25. 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 FP_LED+ 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, or the
use of an Intel Z-U130 Solid-State Drive (or compatible device).
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