Originally Posted by cheapincoming
Yes, I think there are an external device which could from USB to HDMI connect, but the usb interface should be the Micro USB, we call the device "MHL".
It could transfer signal drectly from your Iphone or your ipad, or your other brand phone.
Unfortunately, that's not entirely right since MHL is a unique "standard" - not sure if it has been truly ratified yet. So if source *and* sink don't know about MHL then MHL won't work.
Here's more detail from a previous thread from two months ago,http://www.avsforum.com/avs-vb/showthread.php?t=1373870
In terms of USB to HDMI, there are adapters but they all have picture quality issues compared to a true HDMI image. Not recommended for anything requiring high quality, like viewing a PC screen.