I am not trained in networking but need to setup the cabling and configuration of a network in our new office building. This is a small company with the need of about 35 network ports in the 5 different areas of the office. Comcast business class cable modem broadband has been installed in a closet with a modem/router with 4 ports on the back. We have 5 different areas of the office to supply. I was thinking about connecting an 8 port unmanaged switch to the router and then running one main cat5e line to each of the main 5 office areas. Then in each area, connect an appropriately sized unmanaged switch to supply the network device needs in that area. I am concerned about network performance because a similar network structure is being used at our old office and performance is poor. please help me make the correct decision on this. Thanks!