Intel S975XBX2 Product Specification - Page 61
Table 26. Processor Core Power Connector 2 x 2 Pin
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Technical Reference Table 24. Main Power Connector Pin Signal Name 1 +3.3 V 2 +3.3 V 3 Ground 4 +5 V 5 Ground 6 +5 V 7 Ground 8 PWRGD (Power Good) 9 +5 V (Standby) 10 +12 V 11 +12 V 12 2 x 12 connector detect Pin Signal Name 13 +3.3 V 14 -12 V 15 Ground 16 PS-ON# (power supply remote on/off) 17 Ground 18 Ground 19 Ground 20 No connect 21 +5 V 22 +5 V 23 +5 V 24 Ground Table 25. Processor Core Power Connector (2 x 4 Pin) Pin Signal Name 1 Ground 2 Ground 3 Ground 4 Ground Pin Signal Name 5 +12 V - Rail 1 6 +12 V - Rail 1 7 +12 V - Rail 2 8 +12 V - Rail 2 Table 26. Processor Core Power Connector (2 x 2 Pin) Pin Signal Name 1 Ground 2 Ground Pin Signal Name 2 +12 V 4 +12 V Table 27. Auxiliary PCI Express Graphics Power Pin Signal Name 1 +12 V 2 1 x 4 connector detect 3 Ground 4 +5 V 61