Motherboard Installation Guide (continued)

6. Connect the Power Supply (continued)

b. If you have an AT form factor motherboard, you should plug the power cables into the power connectors as shown in the figure below.  Notice how the black wires are in the CENTER of the two connectors.  You shouldnīt be able to plug the two power connectors in any other way.  But to be safe, make sure they look like the picture below.

AT Connector 

Make absolutely certain that you do not miss any pins because if you do, you will void your warranty and cause damage to yourself or your motherboard when you turn the system on.  After connecting the power, make sure the connectors are seated firmly into their sockets so they will not become loos or fall off during movement of the computer.

7. Install Add-on Cards
There are a few rules you need to follow when plugging in a card.  In order to assure proper operation and a quick installation, adhere to these guidelines:

  • If you are going to install a PCI-Bus interface card on your system, be aware that any one of the two PCI slots can support a Master or Slave device.
  • NEVER force a card into a slot.  If it does not fit, look at the socket on the computer to make sure there are no wires or other obstructions to the slot.
  • NEVER plug an ISA card into a PCI slot or a PCI care into an ISA slot.  You will void your warranty and damage your system board if you do this.
  • When plugging the card in, especially when installing long cards, try to push the entire card in at one time.  Donīt force one end of the card into the socket first and then the other.  This will create a rocking motion between the card and the slot and it will damage the pins within the socket.
  • Make sure that the cards are seated securely into the slots.
  • Before turning on the system, make sure no cards are touching each other or are shorting.

8. Connect PS/2, USB, Serial and Parallel Devices
a. 
If your motherboard has an ATX form factor,  you will see that the connection ports are on the motherboard itself.  Depending on the variations of the ATX form factor, you may or may not have all the ports onboard.  Check the ATX I/O shield page to determine the locations of your ports.

Remember, when plugging in your keyboard and mouse, or when plugging anything into a serial or Com port, make sure that the power is off.  Connecting these devices and ports while the power is on is called "hot-plugging" and may damage your system.

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