Intel RS25SB008 Hardware User's Guide - Page 29
PCI Interface, LED Headers, Table 5. LED Headers Pin-out
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Pin # 16 17 18 19 20 Name PFAIL_L GND BBE BBSTROBE BBSTATUS Description Power Fail Ground Battery Backup Enabled Battery Backup Strobe Battery Backup Status PCI Interface The Intel® RAID Controller RS25SB008 must be installed into a standard x8 or larger PCI Express* slot that complies with the PCI Express Specification, Revision 2.0. The controller is backward-compatible with PCI Express* 1.0 and with x8 or larger slots that are wired with x1, x2, and x4 PCI Express* lanes. LED Headers There are 3 2-pin right angled headers present on the board and these headers are used for connection to external LED which indicate activity on any of the connected HDDs, indicate fault on any of the connected HDDs and to indicate a pending write command. Table 5. LED Headers Pin-out HDD Activity Header (J2A1) HDD Fault Header (J1A2) Write Pending Header (J1A1) Pin # Name Description Name Description Name Description 1 D_ACTIVE_PU 330? to GFAULT_PU 330? to P3V3_DUAL P3V3_DUAL DIRTY_PU 330? to P3V3_DUAL 2 D_ACTIVE_N Connected to GFAULT Connected to Drain DIRTY Drain of of onboard MFT onboard MFT Connected to Drain of onboard MFT Intel® RAID Controller RS25SB008 Hardware User's Guide 19