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Chapter 2: Hardware information
4. SSI/ATX power connectors (24/20-pin U21, 8/4-pin U58)
These connectors connect to an SSI/ATX power supply. The plugs
from the power supply are designed to fit these connectors in only one
orientation. Find the proper orientation and push down firmly until the
connectors completely fit.
In addition to the 24/20-pin SSI/ATXPWR connector (U21), this
motherboard requires that you connect the 8/4-pin SSI12V/ATX12V
(U58) power plug to provide sufficient power to the CPU.
Make sure that your ATX 12V power supply can provide 8A on the
+12V lead and at least 1A on the +5-volt standby lead (+5VSB). The
minimum recommended wattage is 230W, or 300W for a fully
configured system. The system may become unstable and may
experience difficulty powering up if the power supply is inadequate.
If you do not connect the 8/4-pin SSI/ATX12V power connector, the
system cannot boot up.
PU-DLS
®
GND
12V
GND
GND
GND
12V
12V
12V
PU-DLS SSI/ATX Power Connector
For Power Supply
with 20-pin
Power Connector
U58
(SSI12V/ATX12V)
CPU Power Connector
+3 Volts
+3 Volts
Ground
+5 Volts
+5 Volts
Ground
Ground
Power OK
+5V Standby
+12 Volts
-5 Volts
+5 Volts
+3 Volts
-12 Volts
Ground
Ground
Ground
PSON#
Ground
+5 Volts
+12 Volts
+3 Volts
+5 Volts
1
Ground
For Power Supply
with 4-pin
Power Connector
U21
(SSI/ATXPWR)
24/20-pin
Power Connector