Connect a PC Power Supply
Computers are a part of the modern world. You find them in homes, classrooms and work. Computers run on voltages of 12V DC and less. The computer converts the 110V AC from your wall outlet to these low DC voltages by means of a power supply. Occasionally you may need to install a new power supply. Installing a new power supply may seem like a daunting task, but with a little information is a relatively simply process.
Instructions
1. Mount the new power supply into the computer. Screw the four mounting screws through the case bracket into the back of the power supply opposite of the various low voltage power cords - the back is the same side where you plug in your wall outlet cord.
2. Attach the 20 pin connector into the motherboard. The ATX power cord is rectangular shaped measures approximately 2 1/2 inches by 1/2 inch. Press the connector into the motherboard until the locking clip snaps into place.
3. Plug the fan connectors into the motherboard. These plugs are usually 4 pin 1/2 inch by 1/2 inch and square shaped. Push the connector(s) into the motherboard so that it is seated firmly. Some case fans require a direct power connection, which is usually the 4 pin 1 inch by 1/4 inch rectangular power connector with 2 corners cut at an angle: plug those connections together so the connector is seated firmly in the port.
4. Connect the PCIe power connections. If your computer has a PCIe video card, it probably needs an additional direct power connection. This is usually done with the 1 inch by 1/4 inch connector. Press the connector into the provided slot in the PCIe card. Make sure you don't bend the card.
5. Attach the low voltage power cables to the drives of the computer. New drives use the SATA power connectors. SATA power connectors are flat with a slot in them and slide onto the drive connections with a slight snap. All other drives except for floppy drives use the more common 1 inch by 1/4 connector and their ports are located on the right rear of the drive. Press the 1 inch by 1/4 connector(s) into all remaining drives. Floppy drives use a small 4 pin 1/2 inch by 3/16 inch connector.
6. Close the case and connect the 110V power cord to the power supply. Plug the other end into a power strip or wall outlet.
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