Hi, I don't have an 321, but I also don't exactly understand your question. Is this a networking problem? Generally there is a cable from the computer to the router, switch, or hub, and another one from the hub to the NAS. There is also a DHCP server somewhere on that network that passes out IP addresses. All device addresses have to be on the same network, with the same netmask in order to communicate with each other within that network. Is that the case? Wat is the IP configuration of your NAS and of your computer? Is there a hub, switch, or router in between?