Both Ethernet and USB are data-interface options for connecting your computer to a broadband modem.
An Ethernet connection requires that an Ethernet port be present on your computer. This can be in the form of a card installed in your computer, or onboard. Ethernet is the preferred method for connecting your modem, as it is generally more stable and makes sharing of the broadband connection easier.
A USB connection can be used if your computer has an available USB port. Although generally no card installations are necessary with USB, the installation of a USB driver is required. The USB interface does not allow for more than one computer to be connected to the cable modem, and stability of the connection is susceptable to the activity of your computer. Only use USB if your computer doesnt have an Ethernet port.
USB Port
The image below shows two onboard USB ports, highlighted in the yellow box. At the back of your computer check to see whether you have a USB port similar to this. Some computer manufacturers will place their USB ports in varying locations to this example.
Ethernet Port
The image below displays an ethernet card, with the port highlighted in the yellow box. At the back of your computer check to see whether you have an ethernet port similar to this. Some ethernet ports will be 'onboard' - this means that they wont be placed a metal card like the image below, the port will be placed near or next to where your keyboard/mouse plug in.
Note: If you have two ports similar to this, or if this port is where you plug in your phone line to dial up to the internet you may be looking at an internal dialup modem. To be sure you have a ethernet port, follow the steps below.
Right mouse button click the My Network Places icon on your desktop and select Properties to bring up the Network and Dial-up Connections window.
If you have a properly installer Ethernet data-interface, you will see Local Area Connection in the Network Connections screen.
