Intel BLKD915PBLL Product Specification - Page 67
Front Panel USB Connectors, INTEGRATOR'S NOTES
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UPC - 735858166447
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Technical Reference 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 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. 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 31 shows the possible states for a one-color LED. Table 32 shows the possible states for a two-color LED. Table 31. States for a One-Color Power LED LED State Off Steady Green Description Power off/sleeping Running Table 32. States for a Two-Color Power LED LED State Off Description Power off Steady Green Running Steady Yellow Sleeping NOTE The colors listed in Table 31 and Table 32 are suggested colors only. Actual LED colors are 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. 2.8.2.6 Front Panel USB Connectors Figure 18 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. 67
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