Greyhound Lines, Inc. , usually shortened to Greyhound, is an intercity bus common carrier serving over 3,800 destinations across the United States, Canada, and Mexico.
In order for devices on the network to connect to the Internet, the router must be connected to a modem. Therefore, most routers have a specific Ethernet port that is designed to connect to the Ethernet port of a cable or DSL modem. A modem is a device that provides access to the Internet (see below). The modem connects to your ISP, which typically provides either cable or DSL Internet service.
Modem Connections. On the back of your SBG6580 cable modem there are the following ports, from top to bottom, with color codes: 4 Ethernet ports (pink). These are ports for connecting a computer or device to your SBG6580 cable modem via an Ethernet cable.