Simplicity and functionality should be the guiding principles for designing a small office network setup that meets the needs of your growing company. Remember that networking hardware that fits right now may not keep pace two or three years out, and outgrowing your hardware before it reaches obsolescence is generally thought of as a waste of resources. Knowing the basics about networking hardware is the first step in planning for the appropriate purchase.
Think of a small office network setup as having a foundation of switches and routers. Knowing the difference between the two sorts out a lot of the confusion SMB owners may have about choosing the right networking hardware.