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D-22 Sun Fire X4100 and Sun Fire X4200 Servers Service Manual • June 2006
B5 SDA EEPROM Serial Data I/O
B6 -PS_ON Enable for main supply output
C1 Return Ground
C2 Tach _1 Fan tach output (2 pulses per rev)
C3 Return Ground
C4 +3.3V SB +3.3 V Standby Output
C5 SCL EEPROM Serial Clock Input
C6 VIN_GOOD Input voltage above minimum spec
D1 -PS_Present Present–active low (PU)
D2 NC No Connect (Tach_2 if two-fan design)
D3 Return Ground
D4 +3.3V SB +3.3 V Standby Output
D5 S_INT(Alert) Intrusion switch alert
D6 POK Output voltages within spec (PU)
TABLE D-12 Power Supply Connector Pinouts (Continued)
Pin Number Pin Name Description