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9. ATX power connectors (20-pin ATXPWR1, 4-pin ATX12V1)
These connectors connect to an ATX 12 V 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 20-pin ATXPWR1 connector, connect the 4-pin ATX
+12V power plug to provide sufficient power to the CPU.
1. Do not forget to connect the 4-pin ATX +12V power plug.
2. Make sure that your ATX 12 V power supply can provide 8A on the
PSCH-SR ATX Power Connectors
10. Floppy disk drive connector (34-1 pin FLOPPY1)
This connector supports the provided floppy drive ribbon cable. After
connecting one end to the motherboard, connect the other end to the
floppy disk drive. (Pin 5 is removed to prevent incorrect insertion when
using FDD cables with a closed pin 5 hole).
PSCH-SR Floppy Disk Drive Connector
2-28
Otherwise, the system does not boot up.
+12V lead and at least 1A on the +5-volt standby lead (+5VSB).
The minimum recommended wattage is 300W. The system may
become unstable or may not boot up if the power is inadequate.
®
PSCH-SR
Pin 1
®
PSCH-SR
ATXPWR1
+12V DC
FLOPPY1
PIN 1
NOTE: Orient the red markings on
the floppy ribbon cable to PIN 1.
Chapter 2: Hardware information
ATX12V1
+12V DC
GND
GND
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