@Cyberwasp,

I have a very similar setup to yours at home. I have my NAS running into the same switch. This switch connects directly to my mesh router and joins the rest of the nodes across my house to the main router unit. Later Down the Line, I have an ethernet cord running from the SG108E to an Unmanaged four-port switch. This works perfectly to split my connection between different media devices and TVs in my living room. While this is working fine for connected devices, I always prefer to use a managed switch so that the settings can be configured from an interface and problems are potentially easier to troubleshoot.

As long as all the hardware devices can communicate and have the correct settings, you should have no problem adding additional network switches into your system.

  @Cyberwasp,

An unmanaged switch does not interact with IP addresses at all and simply directs information down the correct channels. The Static IP Addresses are set either on the client devices, such as the NAS, or from the Router's DHCP Server. This would make the process extremely simple and allow for setups and ports to be quickly exchanged for one another. If I am not mistaken, an unmanaged switch will not even show up in the list of connected devices for a router, rather it will just be the client connected to it. 

When working with a managed switch, it is entirely up to the features available to the user through the user interface. While a managed switch will operate as an unmanaged by default, there are far more configuration options such as QoS, Port Settings, and VLANs when using a management interface. I also believe that a managed switch will appear in the router settings as a separate client device.