you need a high speed Internet connection with a speed of at least 1.2 Mbps (such as mid-level DSL). For HD video, we recommend 5 Mbps (if you’re not sure what your speed is, go to speedtest and run the simple test). Note that not all content partners enable HD or 1080p streaming video. You may also need a wireless or wired router if you cannot connect Roku directly to your cable or DSL modem