Intel MB893 user manual ATX1 ATX Power Supply Connector, ATX12V1 ATX 12V Power Connector

INSTALLATIONS

ATX1: ATX Power Supply Connector

Signal Name	Pin #	Pin #	Signal Name
3.3V	13	1	3.3V
-12V	14	2	3.3V
Ground	15	3	Ground
PS-ON	16	4	+5V
Ground	17	5	Ground
Ground	18	6	+5V
Ground	19	7	Ground
-5V	20	8	Power good
+5V	21	9	5VSB
+5V	22	10	+12V
+5V	23	11	+12V
Ground	24	12	+3.3V

ATX1 is a 24-pin ATX power supply connector.

ATX_12V1: ATX 12V Power Connector

This connector supplies the CPU operation voltage

Pin #

Signal Name

1,2,3,4	Ground
5,6,7,8	+12V

DIMM1, 3: Channel A1, B1 DDR Socket(Green) DIMM1 is the channel-A first DDR socket.

DIMM3 is the channel-B first DDR socket.

DIMM2, 4: Channel A2, B2 DDR Socket (Purple) DIMM2 is the channel-A second DDR socket. DIMM4 is the channel-B second DDR socket.

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NOTE: Recommended DIMM modules must be of the same vendor type and size

CPU_FAN1/2/3: CPU Fan Power Connectors

Pin # Signal Name

1Ground

2+12V

3Rotation detection

14 MB893 User’s Manual