Manual
Page 8
... The DP-300U has two parallel ports and one USB port located on its back panel. Default IP Address of 255.255.255.0, then your computer's IP Address should be in DHCP server. NOTE: The PC's IP Address must be 192.168.0.x, where x is set as automatically getting from DHCP server or Router which build-in the same subnet as the print server's IP Address...
... The DP-300U has two parallel ports and one USB port located on its back panel. Default IP Address of 255.255.255.0, then your computer's IP Address should be in DHCP server. NOTE: The PC's IP Address must be 192.168.0.x, where x is set as automatically getting from DHCP server or Router which build-in the same subnet as the print server's IP Address...