All Roku streaming players and Roku TV™ are designed to connect to your home wireless network the same way that you connect your home computer or smartphone; however, there are some Roku devices that also have an Ethernet port that allows for a wired connection to your home network.
You can use the product comparison chart to determine which products have an Ethernet port.
Are there other reasons to consider a Roku device with an Ethernet port?
To avoid potential playback issues, you may want to consider a Roku streaming device with an Ethernet port if:
You live in an area where there are a lot of devices broadcasting wireless signals such as an apartment building.
Your wireless network has a weak signal or limited range.
Your Roku device is conveniently located in your home near a wired network connection.