We’ve previously reported that the Samsung Galaxy S III uses a special MHL/HDMI adapter and you would not be able to use the last-generation MHL to HDMI adapter cables because of hardware changes. Samsung has come forward with a great solution as they have built a 5-pin to 11-pin adapter that allows the old cable to work with the new phone. They also gave a reason as to why the change was made:
Samsung Galaxy S® III uses an 11-pin micro USB input, which allows it to support MHL output and USB on-the-go input simultaneously – an improvement over 5-pin capability. This means that customers can take advantage of new functions for accessories that are not supported by a 5-pin micro USB connector, allowing a deeper convergence between the Galaxy S III smartphone and a HDTV.
To ease this transition and to allow for greater innovation with Samsung accessories, Samsung Mobile will offer a 5-pin to 11-pin MHL Cable Adapter that will allow the original Samsung HDTV Smart Adapter to function properly with U.S. models of the Galaxy S III, as well as future Samsung premium smartphones. In addition, Samsung is offering consumers the ability to purchase the new adapter separately, or to bundle it with the original HDTV Smart Adapter. Our goal in offering these MHL adapter solutions is to provide consumers with the newest accessory technology while ensuring the highest level of device compatibility.