Bitsuri Model IV has four 10/100 Mbps external Ethernet ports connected to an internal host port. The other three hosts have external RJ-45 access ports that can be connected to three of the ports on the switch.
The switch allows all four hosts to be connected on the same segment, leaving one port available for connection to an external local network on that same segment. Three one foot long LAN patch cables are included.
Of course, each host can be configured to connected on a separate network segments. They don’t have to be connected to each other with the patch cables.