Intel MB820 user manual ATXP1 ATX Power Supply Connector, ATXP2 ATX 12V Power Connector

INSTALLATIONS

ATXP1: ATX Power Supply Connector

ATXP1 is a 20-pin ATX power supply connector. Refer to the following table for the pin out assignments.

11	1	Signal Name				Pin #		Pin #	Signal Name
			3.3V		11			1		3.3V
			-12V		12			2		3.3V
			Ground		13			3		Ground
			PS-ON		14			4		+5V
			Ground		15			5		Ground
			Ground		16			6		+5V
			Ground		17			7		Ground
			-5V		18			8	Power good
20	10		+5V		19			9		5VSB
			+5V		20			10		+12V
ATXP2: ATX 12V Power Connector
				Pin #		Signal Name
				1			Ground
				2			Ground
				3			+12V
				4			+12V

DIMM1, DIMM2: DDR Channel A Connectors

DIMM1 and DIMM2 are the first DDR channel connectors that must be use together at one time in order for the system to function properly.

DIMM3, DIMM4: DDR Channel B Connectors

DIMM3 and DIMM4 are the second DDR channel connectors that must be use together at one time in order for the system to function properly.

AGP1: AGP Slot

PCI1, PCI2, PCI3, PCI4: PCI Slots

SL1, SL2: ISA Slots

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