Hi @7772,
A warm welcome here in the Roku Community!
We're glad to assist you with your inquiry on setting up your Roku device on your computer. Please be advised that all Roku devices are compatible with displays that have an HDMI port, including most modern computer monitors. If your computer monitor supports HDMI input and has internal speakers, then you can simply plug your Roku device into the HDMI port and access the Roku home page.
If there's anything we can further assist you with aside from this, please let us know.
All the best,
Eunice
Eunice L.
Roku Community Moderator