In most cases, the DHCP server should be disabled in order not to interfere with your existing DHCP server. At home, your router will be assigning the IP address or in the office, most likely a dedicated DHCP server is already running. When the network drive is connected directly to your computer via patch cable or if there is no other DHCP server on the local network, the DHCP server will be enabled automatically (IP 169.254.0.1, Mask 255.255.255.0, Gateway N/A).