A Roku remote without volume keys is an IR only simple Roku remote. It comes with cheapest model of Roku, or is sold at the cheapest price. Also IR remote is useless on any Roku Stick, since Stick don't have an IR sensor, and only accepts wifi remotes.
Edmund
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.