User Manual

Technical Reference
35
Figure 9. Connection Diagram for Front Panel Header (2.0 mm Pitch)
3.6.3.2.1 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.
3.6.3.2.2 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.
3.6.3.2.3 Power/Sleep LED Header
Pins 2 and 4 can be connected to a one- or two-color LED. Error! Reference source not found. 20
and Table 21 show the possible LED states.
Table 20. States for a One-Color Power LED
LED State
Description
Off
Power off
Blinking
Standby
Steady
Normal operation
Table 21. States for a Dual-Color Power LED
LED State
Description
Off
Power off
Blinking (white)
Standby
Steady (white)
Normal operation