If you need an HDMI Extender for your Roku Streaming Stick, you can request them for free at their site. Just click the 'Get Sample' button down below then provide your mailing address and the serial number that you can find at the back of your Roku Streaming Stick.

Please note that if your model of Roku device is not designed to be used with an extender, you will not be able to complete the request. 

HDMI extenders are only for use with Roku Streaming Stick products that do not use an HDMI cable to connect to your TV.