INSTALLATIONS
14
MB893 User’s Manual
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.
[
NOTE: Recommended DIMM modules must be of the same vendor type and
size
CPU_FAN1/2/3: CPU Fan Power Connectors
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection
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