While many questions about routers are generic and could be answered anywhere, some things need specialist knowledge. Routers and switchers don't have much in common.
You might get more help, and find earlier questions and answers specific to your device, in the appropriate section for your hardware. That's probably here:
If the nework or router your trying to configure doesn't need any kind of switch management then of course, you can use a non managed swtich. Just for traffic pass thru and if thats all you need to gain access to the router remotely, then a non managed switch would be preferred to use. No need to have anything addtionally in the path to the router. Un-managed switch are easy to connect and pnp. No configurations needed on them. Security is configured at the endpoints (PC/Router) if and when this is needed.
