Compaq dc7700 HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1s - Page 198
Pin Power CMT and MT models, Pin MicroFit Power USDT, SFF, and ST models, Pin Power for CPU MT
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Connector Pin Assignments 24-Pin Power (CMT and MT models) Connector 24 13 Pin Signal 1 +3.3 V 2 +3.3 V 3 GND 4 +5 V 5 GND 6 +5 V 12 Pin Signal 7 GND 8 POK 9 +5 Vaux 10 +12 V 11 +12 V 12 +3.3 V 1 Pin Signal 13 +3.3 V 14 -12 V 15 GND 16 PSON 17 GND 18 GND Pin Signal 19 GND 20 open 21 +5 V 22 +5 V 23 +5 V 24 GND 24-Pin MicroFit Power (USDT, SFF, and ST models) Connector 24 13 Pin Signal 1 +5 Vaux 2 GND 3 +5 V 4 +5 V 5 PS_ON 6 GND 12 Pin Signal 7 PWRGD 8 +3.3 V 9 +3.3 V 10 Tach 11 GND 12 Fan-CMD 1 Pin Signal 13 +12 V 14 +5 V Sense 15 GND 16 +5 V 17 +5 V 18 +3.3 V Pin Signal 19 GND 20 +3.3 Sense 21 +3.3 V 22 +3.3 V 23 GND 24 -12 V 4-Pin Power (for CPU) (MT and CMT models) Connector and Icon Pin 1 2 3 4 CMT and MT Signal GND GND +12 V CPU -12 V CPU A-6 433612-001 Service Reference Guide, dc7700