Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: I am wanting to use this to hook up 2 external monitors with my laptop.  Does this product support extended desktops?
Document: I use it to hook up my old laptop to my television. Product works great and came in quickly. Easy to install.
It its a good product because it does what it meant to be. I was a little unconfortable with the issue that it has veeeery poor support for Linux OS, so if you are going to use it in Windows it's OK and works very good, but if you have Linux based OS may be should try anything else.
I ordered this adapter so I could connect my Toshiba laptop to my TV. The video works great through the HDMI cable, but it does not run the audio through to the TV. You have to run separate audio to external speakers or a sound system. Would have rated it 5-star if the audio worked as expected. Other than that it works fine with my Windows 7 laptop. I can watch streaming video on my TV and still use my laptop.
I had high hopes of getting audio from my laptop to run thru the same HDMI cable to big screen. I have USB to HDMI unit from KWorld UD 160 that handles video ONLY fine. I have to run audio separately.The unit would not support audio and only output res of 640x480 when I chose "duplicate displays".Tech support was fast and good.
I use it on Windows 7 machine. Both a 32 and another 64 bit. Make sure you keep the software CD! I could not find the software online to download and thankfully found the mini CD it came with. My other laptop did not have the pull out CD drive so I copied the contents of the installation CD onto a thumb drive and ran the install from the thumb drive. It does well with iTunes movies on a flat screen TV. It will adjust your resolution quite a bit.
I wrote a negative review on this product before... For whatever reason, I checked the reviews on this product and found that my review had been removed. That's pretty ridiculous if you ask me!! DO NOT BUY THIS PRODUCT!!! Not only does the product not work as described, the support apparently doesn't like negative reviews so they'll just take it down.................. BEWARE!
One laptop only had 2 gigs of RAM and the movies stalled out quite a bit. The 16 GB RAM machine showed on the flat screen just fine. It will take up extra resources so make sure you have at least the bare minimunm RAM. The volume was good and the picuture was clear.
Best customer service ever. They know how to treat their customer. Their support is not until they ship your order but they will with you until you are satisfied with your product.
Plugged it into my laptop and it automatically downloaded the driver, and the converter worked perfectly, sound and picture. Picture quality is HD and sound quality is great. No problems encountered. I highly recommend this product.
Bought this and set it up on my Windows 7 laptop and after loading the install CD the video came right up on the HDTV that I have hooked up. Make sure that you are extending your screens or moving your desktop to the HD Monitor only unless your laptop has an 1080p capable panel. Otherwise if you are duplicating it will only work at the resolution of your laptop. Seems to pick up noise from the screen, but not too bad. Overall, the product works as advertised and the picture looks good.
Answer: I use it to extend the desktop from my laptop to another monitor and it works just fine.  I don't have personal experience beyond that.  If you are extending to more monitors than the main and one more, you may be able to use two adaptors; just a guess.