Intel DG33BU specifications Auxiliary Front Panel Power LED Header

Intel Desktop Board DG33BU Technical Product Specification

2.2.2.5.2Reset 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.

2.2.2.5.3Power/Sleep LED Header

Pins 2 and 4 can be connected to a one- or two-color LED. Table 21 shows the possible states for a one-color LED. Table 22 shows the possible states for a two-color LED.

Table 21. States for a One-Color Power LED

LED State	Description
Off	Power off/sleeping
Steady Green	Running

Table 22. States for a Two-Color Power LED

LED State	Description
Off	Power off
Steady Green	Running
Steady Yellow	Sleeping

NOTE

The colors listed in Table 21 and Table 22 are suggested colors only. Actual LED colors are chassis-specific.

2.2.2.5.4Power Switch Header

Pins 6 and 8 can be connected to a front panel momentary-contact power switch. The switch must pull the SW_ON# pin to ground for at least 50 ms to signal the power supply to switch on or off. (The time requirement is due to internal debounce circuitry on the board.) At least two seconds must pass before the power supply will recognize another on/off signal.

2.2.2.6Auxiliary Front Panel Power LED Header

Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel header.

Table 23. Auxiliary Front Panel Power LED Header

Pin	Signal Name	In/Out	Description
1	HDR_BLNK_GRN	Out	Front panel green LED
2	Not connected
3	HDR_BLNK_YEL	Out	Front panel yellow LED

48