Supermicro SUPER P6DKE, Руководство пользователя

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2-9
Chapter 2: Installation
2-4 Mounting the Motherboard in the Chassis
All the motherboards have standard mounting holes to fit all differ-
ent types of chassis. Chassis may come with a variety of mounting
fasteners, made of metal or plastic. Although a chassis may have
both metal and plastic fasteners, metal fasteners are the most
highly recommended because they ground the system board to the
chassis. Therefore, use as many metal fasteners as possible for
better grounding.
2-5 Connecting Cables
Power Supply Connectors
After you have securely mounted the motherboard to the chassis,
you are ready to connect the cables. Attach power supply cables to
J20 for a 5V power supply, J21 for ATX power or J21A for a 3.3V
power supply. The +3.3V power supply is for 3.3V PCI add-on
cards or CPU power support when 3.3V CPU is used. Do not force
the cables, but make sure they are fully seated. The two black
wires on each power cable (J20) sit next to each other when cor-
rectly installed. See Table 2-3, Table 2-4, and Table 2-5 for pin
definitions of a 3.3V power supply, 5V power supply and ATX power
supply.
Table 2-3. 3.3V Power Supply Connector Pin Definitions
Connector Pin
N u m b e r N u m b e r Function
J21A 1 Ground (Black wire to be connected)
2 Ground (Black wire to be connected)
3 Ground (Black wire to be connected)
4 +3.3 VCC
5 +3.3 VCC
6 +3.3 VCC