1, very individual wireless router has three interfaces (excluding USB interface).
2, now home wireless routers are generally six interfaces. One power port, one WAN port, four LAN ports.
3, some enterprises, Internet cafe router 7 interfaces:
4, some home wireless router 10 interfaces, a power interface, a WAN interface, eight LAN interfaces.
5. Some special routers have 13 interfaces:
6, some special router 27 interfaces:
7, there are some special router 52 interfaces: