Lesson 22 Connecting power cables 2014

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“Some cases. The power supply is installed at the top of the case above the the motherboard on these cases. You should turn power supply. So the air intake is the bottom in this case.

The power supply goes below the motherboard at the bottom of the case with bottom mounted power supplies you should turn it so the air intake faces upward. However if the case is vented below the power supply you can turn the power supply over so it can get cool air from the outside of the case. The power supply is secured to the case with four screws hold the power supply in place and match up the power supply. Screw holes with the holes in the case.

Insert the first screw at the top and the second at the opposite bottom corner leave them loose at first until all the screws are in and then tighten them down check. The power supply for a slider next to the primary power switch. If it has a slider set it to 115 volts or 230 volts depending on your local power. Requirements.

115 volts is standard for the us..

Most modern power supplies don t have a switch and detect the voltage automatically wait to connect the power supply to the outlet until the computer is fully put together there are six types of connectors on an atx12v. 23 or eps 12v. 291. Power supply.

The first is a 24 pin connector that provides the main source of power to the motherboard. Some power supplies come with a 20 plus. 4. Pin connector and you can remove 4 of the pins by breaking them off in case.

Your motherboard. Only needs the 20 pins the second is a 4 or 8 pin plug that connects to the motherboard some power supplies come with 2 4 pin plugs that you can combine to create an 8 pin plug the third is a 4 pin plug also called molex which connects to some fans and older hard drives and dvd drives fourth is a smaller 4 pin plug used to power a floppy drive v. A flat sata power connector for sata drives and vi a 6 or 6 2 pin pci express video card power connector not all video cards require a connection to the power supply. Most video cards that do require the 6 or 6 2.


Connectors will come with a 4 pin molex to six or 6 2. Pin adapter all of the power plugs are keyed. So you can t put them in upside down. If you have a modular power supply decide.

Which of the cables. You will need and save the rest for future use read the manual for the power supply to make sure you plug the cables into the correct spots on the power supply. We don t have any drives or fans that take a 4 pin molex connection on this build if you need to use a molex cable. The connection is keyed.

So it will only go in one way it sometimes takes some extra pressure will connect the three fans that came pre installed in the case to the three pin fan connectors on the motherboard on some motherboards. The headers will have four pins. But these are also compatible with three pins and power connections on our modular power supply will connect a sata power cable to the power supply and route the cable to the other side of the case. We ll connect one of the connectors on the cable to the ssd and the other to the hard drive.

I ll route the end of the cable back into the main part of the case and connect it to the dvd burner on this power supply..

The 20 or 24 pin and 4 or 8 pin power cables are permanently attached to the power supply. I ll route them through to the other side of the case and bring the 24 pin cable back through to connect it to the motherboard i ll take the 8 pin plug to the other side of the case to the top and bring it through above the motherboard to connect the 8 pin plug. It is very common to forget to connect this power cable make a point to remember this connection again all of the connections are keyed. So the plugs can only go in one way our video card does require a 6 pin pci express power connection.

I ll connect a pci express power cable and route it through the other side of the case and then back and connect it to the 6 pin pci express connection on the video card. If you need to remove the main power cable. The 4 or 8 pin plugs or the pci express power connectors. There is a tab to hold down while you pull that s it the computer is assembled in the next lesson we ll power.

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