Intel D865PCD specifications States for a One-Color Power LED, States for a Two-Color Power LED

Intel Desktop Board D865PCD Technical Product Specification

2.8.3.2.1Hard Drive Activity LED Connector

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 an IDE hard drive connected to an onboard IDE connector.

2.8.3.2.2Reset Switch Connector

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.

2.8.3.2.3Power/Sleep/Message Waiting LED Connector

Pins 2 and 4 can be connected to a one- or two-color LED. Table 26 shows the possible states for a one-color LED. Table 27 shows the possible states for a two-color LED.

Table 26. States for a One-Color Power LED

LED State

Off

Steady Green

Blinking Green

Description

Power off/sleeping

Running

Running/message waiting

Table 27. States for a Two-Color Power LED

LED State

Off

Steady Green

Blinking Green

Steady Yellow

Blinking Yellow

Description

Power off

Running

Running/message waiting

Sleeping

Sleeping/message waiting

✏NOTE

To use the message waiting function, ACPI must be enabled in the operating system and a message-capturing application must be invoked.

2.8.3.2.4Power Switch Connector

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.

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