Intel Desktop Board D510MO Technical Product Specification

2.2.2.4.1 Hard Drive Activity LED Header

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 one of the

following:

• SATA storage device connected to an onboard SATA connector

• Intel Z-U130 USB Solid State Drive (or compatible device) connected to the

designated Z-U130 front panel USB header

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 single- or dual-color LED. Table 29 shows the

defaul

t states for a si

ngle-color LED.

Table 29. States for a One-Color Power LED

LED State Description

Off Power off/hibernate (S5/S4)

Blinking Sleeping (S3)

Steady Green Running/Away (S0/S1)

NOTE

The LED states listed in Table 29 are default settings that can be modified through

BIOS setup. Systems built with a dual-color front panel power LED can also use

alternate color state options.

2.2.2.4.4 Power Switch Header

ns 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 circuitry 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

circuitry will recognize another on/off signal.