... speedRedundant multiple host devices :5 host devices : Virtual COM, TCP Server, TCP Client mode ;4 host devices : UDPNAT-pass through : ... /IP interface and versatile operation modes: VirtualCom, Serial Tunnel, TCP Server, TCP Client, UDP, Ethernet modem. In addition, the Windows ... untility, DS-Tool, could configure multiple devices and set up the mappings of Virtual Com. The features of NAT ...