How about you plug it in and find out for yourself.
Computers that don't have a wireless Internet connection use ethernet.
Roku is a small black setup box comes with a remote control and power cords. You can access the roku player through the wireless or Ethernet connection. Roku Streaming device contains more than 2000+ Channel and Shows through the internet connection. For example, you can watch Netflix, Amazon Instant Video, Hulu Plus, YouTube, and much more, on your TV.Roku Account Setup:Before you going to use the roku, you need to create the roku account. By using this account you can store your channels and shows. Go To my.roku website and fill out your account details for creating the roku account.Roku Device Setup:Power on the Roku and TV.Connect the TV and Roku device on the same network.Insert the batteries on your remote.Then go to the roku.com/link site and enter the roku link code for activating the roku device.If you need any technical support for roku account activation or roku account setup call roku service team at 1-844-965-4357.
An Ethernet connection relates to connectivity to your modem and does not represent a power source for your computer.
It gives you a wired connection to your internet router.
With an ethernet cable. (male)
Simple anwser, yes.
A wireless adapter would be useless if you can use an ethernet cable. Save the money and just use a wired connection.
You need a internet connection on your Xbox to download games on the marketplace. You could use ethernet but you can also use wifi (wireless).
An Ethernet (RJ45) connection can be found on a network card.
Mine does not have one for dial up connection using a phone jack, have to use ethernet connection.
For your PS3 connection you need WiFi or an ethernet cable that is connected to the internet. The HDMI cable only connects the PS3 to the HDTV and will not provide the internet connection.
You will need to use an Ethernet connection in this case. Ethernet is a lot faster than a phone line. You will need a coax jack and a modem in order to have an Ethernet connection. For more convenience, you can just get an Ethernet wall jack installed if you don't have one yet, and you can just get an Ethernet cable to connect from the Ethernet wall jack to your computer, giving you a high speed internet privledge.