Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Is this just for RGB video or can it be used like an RCA compositie (one for cideo and left and right sound)?
Document: Need to be sure that you know these are RGB cables used for video only. Won't work for audio and video and does not convert HDMI to RCA without adapter.
Worst piece of garbage I've bought from Amazon to date. You can't tell which color is for video or sound. The rubber sleeve that covers the connectors come right off and the sodier connections are poorly designed.complete waste of money and time waiting to get this crap. Beware if you're thinking of buying this hdmi to rca cord waste of money.
Component video was originally defined as RGB many years ago. If component video actually worked as RGB it would be fine. Given that in real life component video is Luma/YPbPr this product is useless. Although inexpensive and not worth returning it left me stuck without a solution and with an HDMI audio extractor that I also had no need for since without a video solution there was no point in pursuing the more expensive audio portion of the project.
When I used this to hook up my bluray, I only got sound on the tv, no picture. The bluray device said it upscales, so this should have worked, but nothing.
Used it to send video output from computer to tv, Tried both the component input and the normal rca inputs on the tv. Didn't work.
This is not an RCA cable it is an RGB cable.... It does not transmit audio... and it does not convert the signal... useless
The worst product and it is true like other that purchased before me. This wire does not work on old/new TV or DVD or Tablet. Not working, not worth the time, not worth the price, not even bother to look at it.The one positive review probably the seller's own false advertise
I have actually never used this item but it did arrive on time and looked fine still does I ordered it to hook an HD media player up in my daughters room on her old style Tv but realized it wouldn't work after I ordered it. I probably could have opted out but it was only a couple bucks and it was my own fault so just put it away who knows maybe one day I will find a use for it.
This cable doesn't nor can it work, HDMI is digital, and RCA is analog, without a converter box it cannot take a digital image from say a laptop, and play it through a TV using the RCA hook ups. So don't waste your money like i did.
You guys have to remember, that you are downgrading your picture quality a bit. Hdmi to hdmi has certain wires built in it to enhance your picture quality for your tv or video games. RCA wires don't have that specific wires built in. So all in all, remember folks. Hdmi to RCA is downgrading the picture quality a tad bit than hdmi to hdmi.
Answer: Best I can say is that it did not work as a composite for me but if you have something that can convert analog to digital then this may? bridge the link. I had to buy a HDMI to RCA composite from another seller to get my old tube Tv to work with my new blueray player. It costs about $33 and looks like a little white box. I hope this helped?