The original Roku device and some Roku 2 devices let users connect the device to a television with composite cables, but later devices only connect with an HDMI cable. Some Roku devices also have an Ethernet port that provides an alternative to a wireless connection.

Roku devices also have power cables users need to connect. Another option to consider is the Roku Streaming Stick, which has the HDMI port integrated in the device's design. When used with a compatible television, Streaming Stick devices can draw power from the HDMI port without needing an external power supply, but they come with a power cable that Roku's website recommends.