Intel D845GLLY D845GLLY_ProductSupplement - Page 21

Product-Specific Features 2.2.3.1.1 Hard 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. 2.2.3.1.2 Reset 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 Desktop Board resets and runs the POST. 2.2.3.1.3 Power/Sleep/Message Waiting LED Connector Pins 2 and 4 can be connected to a one- or two-color LED. Table 15 shows the possible states for a one-color LED. Table 16 shows the possible states for a two-color LED. Table 15. States for a One-Color Power LED LED State Description Off Power off/sleeping Steady Green Running Blinking Green Running/message waiting Table 16. 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 @ INTEGRATOR'S NOTE To use the message waiting function, ACPI must be enabled in the operating system and a message-capturing application must be invoked. 21