Roku 3 works with HDTVs with HDMI port. HDMI cable not included.
Availability of 1080p HD video limited by channel provider and speed of broadband connection.
for list of file formats supported via USB on Roku 3.
Subscriptions or other payments may be required to access content on certain channels. For example, Netflix requires a paid subscription, which gives you access to movie and TV show titles in the Netflix streaming catalog.
Some channels may not be available to all households in every market or in all countries where Roku players are sold.
for a list of devices that support screen mirroring.