Intel D915PSY Product Specification - Page 74
Front Panel Connector, Hard Drive Activity LED Connector [Yellow]
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Intel Desktop Board D915PGN/D915PSY Technical Product Specification 2.8.2.5 Front Panel Connector This section describes the functions of the front panel connector. Table 34 lists the signal names of the front panel connector. Figure 20 is a connection diagram for the front panel connector. Table 34. Front Panel Connector Pin Signal In/Out Description Pin Hard Drive Activity LED [Yellow] 1 HD_PWR Out Hard disk LED pull-up 2 (750 Ω) to +5 V 3 HAD# Out Hard disk active LED 4 Reset Switch [Purple] 5 Ground Ground 6 7 FP_RESET# In Reset switch 8 Power 9 +5 V Power 10 Signal In/Out Description Power LED [Green] HDR_BLNK_ Out GRN Front panel green LED HDR_BLNK_ Out YEL Front panel yellow LED On/Off Switch [Red] FPBUT_IN In Power switch Ground Ground Not Connected N/C Not connected N/C Power Switch Dual-colored Power LED + − Single-colored Power LED − + Green Re d 9 87 65 43 21 Yellow Purple +5 V DC Reset Switch − Hard Drive + Activity LED OM17000 Figure 20. Connection Diagram for Front Panel Connector 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 74