A system design shows the components and wiring in a network of computers and other devices. RFFlow includes a multitude of shapes for diagrams of this type.

If you haven't already done so, first download the free trial version of RFFlow. It will allow you to open any chart and make modifications.

Once RFFlow is installed, you can open the above chart in RFFlow by clicking on System_Design.flo. From there you can zoom in, edit, and print this sample chart. It is often easier to modify an existing chart than to draw it from scratch.

To draw this chart without downloading it, run RFFlow and click on the More Shapes button. Scroll to the Computers/Networks folder and click the plus sign to open it. There are several stencils with computer shapes. Click one you need and then click the Add Stencil button.