Intel D915PCML mATX 915P DDR2-533 LGA775 BOXD915PCML 用户手册
产品代码
BOXD915PCML
Technical Reference
69
2.8.2.5.1
Hard Drive Activity LED Connector [Yellow]
Pins 1 and 3 [Yellow] 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:
• A Serial ATA hard drive connected to an onboard Serial ATA connector
• An IDE hard drive connected to an onboard IDE connector
read from or written to a hard drive. Proper LED function requires one of the following:
• A Serial ATA hard drive connected to an onboard Serial ATA connector
• An IDE hard drive connected to an onboard IDE connector
2.8.2.5.2
Reset Switch Connector [Purple]
Pins 5 and 7 [Purple] 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.
switch that is normally open. When the switch is closed, the board resets and runs the POST.
2.8.2.5.3
Power/Sleep LED Connector [Green]
Pins 2 and 4 [Green] can be connected to a one- or two-color LED. Table 34 shows the possible
states for a one-color LED. Table 35 shows the possible states for a two-color LED.
states for a one-color LED. Table 35 shows the possible states for a two-color LED.
Table 34.
States for a One-Color Power LED
LED State
Description
Off
Power off/sleeping
Steady Green
Running
Table 35.
States for a Two-Color Power LED
LED State
Description
Off
Power off
Steady Green
Running
Steady Yellow
Sleeping
✏
NOTE
The colors listed in Table 34 and Table 35 are suggested colors only. Actual LED colors are
product- or customer-specific.
product- or customer-specific.
2.8.2.5.4
Power Switch Connector [Red]
Pins 6 and 8 [Red] 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.
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.
2.8.2.6
Front Panel USB Connectors
Figure 21 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 1, 3, 5, and 7 comprise one USB port.