What is the difference between a switch and a router? A switch connects devices within a LAN (Layer 2), while a router connects networks to other networks (Layer 3).

I think your best option is to only connect one port of the Nas to the network. why do you want one port connected to the router and one port connected to the switch?

Of course, the better solution would be to connect an Ethernet cable between your router and your switch. If you can't do that for some reason, get a wireless bridge and plug it into your switch.

Unlike a router which is capable of creating and routing between multiple networks, a switch is a device that’s designed only to facilitate communications for devices on the same network.

Computers should not be connected to a router's WAN port, as this would prevent data from entering or exiting the network. Instead, a computer should be connected to a router's local area network ...