How to use Aiduino module to connect to computer network?
An Arduino is completely incapable of doing such a difficult task. It's literally impossible because the processor isn't strong enough, it has no built in network capabilities that support NAS, it has no USB software built in, and so on and so on.

But you can use a Raspberry Pi. They are cheap for their capabilities, they do require quite some programming to get it to work but there's a huge community that has guides for everything. Best of luck :)