Create a rectangle using the selection tool. Rectangle(Rectangular Shape Tool).
Double-click on a layer to open the layer style window. Apply the following settings:
Duplicate the layer twice. Slightly reduce the resulting layers and place one slightly higher and the other slightly lower, as shown below. Put these layers below the rest in Layer Palette(Layer palette).
Create multiple lines and circles using basic shapes and tools. Apply such layer settings as above and place as in the image below.
Select and merge all layers. Duplicate them twice and place as below.
Create several circles and apply the same layer style. Choose a tool TOist(Brush Tool) with thickness one pixel and create two connecting wiring as below:
Select and merge all layers. Click Ctrl + L, to open Level settings(Level settings). Set the following options:
Write the link name on top of the button.