Intel 2804040 user manual PIN assignment

2804040 User’s Manual				Hardware Setup
Connector: ATX
Type: 24-pin ATX power connector
	PIN assignment
	1	3.3V	13	3.3V
	2	3.3V	14	-12V
	3	GND	15	GND
	4	5V	16	PS_ON
	5	GND	17	GND
	6	5V	18	GND
	7	GND	19	GND
	8	PW_OK	20	-5V
	9	5V_SB	21	5V
	10	12V	22	5V
	11	12V	23	5V
	12	3.3V	24	GND

Connector: CN_12V

Type: 4-pin standard Pentium 4 additional +12V power connector

	Pin	Description	Pin	Description
	1	Ground	2	+12V
	3	Ground	4	+12V
	5	Ground	6	+12V
	7	Ground	8	+12V
Connector: CPUFAN
Type: 4-pin fan wafer connector
	Pin	Description	Pin	Description
	1	Ground	2	+12V
	3	Fan Speed Detection	4	Sense

Connector: NBFAN, SYSFAN
Type: 3-pin fan wafer connector
	Pin	Description	Pin	Description	Pin	Description
	1	Ground	2	+12V	3	Sense

Power and Fan Installation 29