Just straight component leads from the Xbox to the converter and a HDMI lead from the converter to the T.V., done and it works well. No lines, no interference. It just does exactly what you want, HDMI output from your beloved Xbox.

I personally will be looking at installing the converter in the Xbox itself and add a HDMI port above the AV connector but that is in the future. At the moment it is all about just letting you guys know this one actually works and at $12 Aussie, is super cheap. I bought it on EBay out of China and is widely available. This is a picture of the converter, nice and small. I was after something small I could easily fit inside the Xbox myself.

It is USB powered, 5vDC. In my testing I used a USB wall plug to power it. When it goes inside the Xbox, I'll get the 5vDC from the hard drive power connector to power it or any other place 5volts is inside the Xbox. I will also be testing to see whether the 5vDC available on pin 13 on the AV connector supplys enough current to power this adapter and if that works, it would be an ideal place to grab 5vDC from to power the converter externally rather than the front ports of the Xbox. If your T.V. has a USB port you could power the converter from that as an alternative. I did test this the USB port on my T.V. and it also worked quite well.
Here's some pictures I took using the converter. All these pictures you can see in the bottom left of the screen showing the input source that the T.V. is actually using is HDMI1 and the fact it is 720p. Yer I know it's an old build, don't look at that bit BuZz.




By the way that last picture actually has rain on that screen shot, it isn't interference or static lines. I'm kicking myself I only ordered one of these units for testing. I need at least another four for this house and until I get another one, I won't be ripping this one apart to see just how small the internal board is and therefore where I can mount it inside the Xbox and direct wire it in. When I get up to that , I'll put up pictures with instructions if anyone is interested in that type of modding.