Datasheet

Intel Desktop Board D865PERL Technical Product Specification

2.8.3.2.3 Power/Sleep/Message Waiting LED Connector

Pins 2 and 4 can be connected to a one- or two-color LED. Table 39 shows the possible states for

a one-color LED. Table 40 shows the possible states for a two-color LED.

Table 39. States for a One-Color Power LED

LED State Description

Off Power off/sleeping

Steady Green Running

Blinking Green Running/message waiting

Table 40. States for a Two-Color Power LED

LED State Description

Off Power off

Steady Green Running

Blinking Green Running/message waiting

Steady Yellow Sleeping

Blinking Yellow 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.

2.8.3.2.4 Power 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 Desktop Board D865PERL.) At

least two seconds must pass before the power supply will recognize another on/off signal.

2.8.3.3 Front Panel USB Connectors

Figure 25 is a connection diagram for the front panel USB connectors.

INTEGRATOR’S NOTES

• The +5 V DC power on the USB connector is fused.

• Pins 1, 3, 5, and 7 comprise one USB port.

• Pins 2, 4, 6, and 8 comprise one USB port.

• Use only a front panel USB connector that conforms to the USB 2.0 specification for high-

speed USB devices.