Intel Desktop Board D810EMO/MO810E Technical Product Specification

2.8.3.2.1Power / Sleep / Message Waiting LED Connector

Pins 2 and 4 can be connected to a single- or dual-colored LED. Table 32 lists the possible states for a single-colored LED. Table 33 shows the possible states for a dual-colored LED.

Table 32. States for a Single-colored Power LED

LED State

Description

ACPI State

Off

Not running

S1, S3, S5

Steady Green

Running

S0

Blinking Green

Running/message waiting

S0

Table 33. States for a Dual-colored Power LED

LED State

Description

ACPI State

Off

Power off

S5

Steady Green

Running

S0

Blinking Green

Running/message waiting

S0

Steady Yellow

Sleeping

S1, S3

Blinking Yellow

Sleeping/message waiting

S1, S3

✏NOTE

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

2.8.3.2.2Power Switch Connector

Pins 6 and 8 can be connected to a front panel power switch. The switch must pull pin 6 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.

2.8.3.2.3Hard 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. For the LED to function properly, an IDE drive must be connected to the onboard IDE interface.

2.8.3.2.4Reset Switch Connector

Pins 5 and 7 can be connected to a momentary SPST type switch that is normally open. When the switch is closed, the board resets and runs the POST.

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