Prevent HD content being displayed via component cables?

OK, found the answer in another earlier thread when the Roku DVP became available:

"RokuTaylor" wrote:
You will only be able to get HD resolutions on HDMI with HDCP support. Component video outputs are limited to 480p for copyrighted content because there is no copy protection.

I haven't seen this documented elsewhere. I didn't realize that it upconverts SD on the HDMI as well...

Interesting. The HD content on Netflix looks nicer than 480p on my component setup.

...but this from the Roku FAQ:

Playing HD movies and TV shows on your Roku player
Both Netflix and Amazon Video On Demand offer high-definition (HD) content. To play HD content you must:

1. Own a Roku HD player (also known as the Netflix Player) or HD-XR player.
2. Use an HDMI or Component video cable to connect your Roku player to an HDTV.
...
You’ll know that you’re getting HD when the “HDâ€

I can confirm that I get the "HD" logo when streaming HD content from Amazon or Netflix using component.

I did switch my Roku to HDMI to see if I could see a difference. One thing I did notice is that HDMI does give me a brighter picture (could just be my settings for each input though) -- but the picture quality doesn't seem any different otherwise.

"KennyJ" wrote:
I can confirm that I get the "HD" logo when streaming HD content from Amazon or Netflix using component.

I did switch my Roku to HDMI to see if I could see a difference.

I also did side by side HD comparisons. I couldn't tell any difference between the two on my setup, so I use component for the Roku to free up the HDMI port for an upscaling DVD player that won't work through component.