Technical Reference
55
2.7.2.5.2 Reset Switch Connector [Purple]
Pins 5 and 7 [Purple] 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.
2.7.2.5.3 Power/Sleep LED Connector [Green]
Pins 2 and 4 [Green] can be connected to a one- or two-color LED. Table 28 shows the possible
states for a one-color LED. Table 29 shows the possible states for a two-color LED.
Table 28. States for a One-Color Power LED
LED State Description
Off Power off/sleeping
Steady Green Running
Table 29. 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 28 and Table 29 are suggested colors only. Actual LED colors are
product- or customer-specific.
2.7.2.5.4 Power Switch Connector [Red]
Pins 6 and 8 [Red] 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.
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