Intel DG41KR Product Specification - Page 51
Auxiliary Front Panel Power LED Header
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Technical Reference 2.2.2.4.2 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. 2.2.2.4.3 Power/Sleep LED Header Pins 2 and 4 can be connected to a one- or two-color LED. Table 22 shows the possible states for a one-color LED. Table 23 shows the possible states for a two-color LED. Table 22. States for a One-Color Power LED LED State Description Off Steady Green Power off/sleeping Running Table 23. States for a Two-Color Power LED LED State Description Off Steady Green Steady Yellow Power off Running Sleeping NOTE The colors listed in Table 22 and Table 23 are suggested colors only. Actual LED colors are chassis-specific. 2.2.2.4.4 Power 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. 2.2.2.5 Auxiliary 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 24. Auxiliary Front Panel Power LED Header Pin Signal Name 1 HDR_BLNK_GRN 2 Not connected 3 HDR_BLNK_YEL In/Out Out Out Description Front panel green LED Front panel yellow LED 51