I have two HDMI adaptors.  I bought the first and took it to my condo.  It worked great.  It worked with my iPhone 4 and Ipad2.  I bought another for home and it worked great as well.  I was at my sisters house the other day, who also has one, and I pluged into it and I got a message on my phone "The accessory is not supported by Iphone"  I came home and tried mine, and same message.  I pluged in the Ipad2 and it works great.  Any suggestions as to the problem or a solution?
Rchetek
	
		
			
		
		
	
				
			Rchetek