Build your own computer

Step 3 Installing the Power Supply

Take the power supply (the big box with all the wires sticking out) and put it in the very top of the case where there is a hole for the fan and plug out the back. There are usually 4 screws to mount the power supply to the back of the case. Move the wires off to the side (ie. outside the case) because we won't need it until one of the last steps.