Use this table to understand what plugs into an AirPort base station or Time Capsule.
symbol | port |
10/100/1000Base-T Ethernet WAN port
Connect a DSL or cable modem, or connect to an existing Ethernet network with Internet access.
10/100/1000Base-T Ethernet LAN port
Connect local Ethernet computers (computers without Internet access) and printers.
Universal Serial Bus (USB) printer or hard disk port
Connect a USB printer so that computers connected to the AirPort network can share the printer. If your device supports it, you can connect a compatible USB hard disk so that computers connected to the network can access the disk, or you can connect a USB hub, and then connect both a printer and a hard disk.
Power adapter port
Connect one end of the AirPort Extreme Base Station power adapter into the port and the other end to an electrical outlet.