(Mobile High-Definition Link) An interface between portable devices (smartphones, tablets, etc.) and an HDTV set. With support for 1080p resolution and 7.1 channel 192 kHz audio, MHL devices began to ship in 2011. Devices can obtain power through the MHL interface, and they use a standard 5-pin Micro USB socket with the exception of new Samsung products, which have 11-pins. In 2013, MHL Version 3.0 added support for 4K (2160p) resolution. See MHL Consortium.
From Device to HDMI
This Boxwave MHL adapter (www.boxwave.com) plugs into the 5-pin Micro-USB MHL socket on the mobile device and into HDMI on the TV.
From Set-top Box to the TV
Plugged into an MHL-compliant HDMI port on an HDTV, the Roku Streaming Stick provides the same functions as a Roku set-top box. The Stick connects to the home router via Wi-Fi. See Roku
. (Image courtesy of Roku, Inc.)
From Samsung Devices
An 11-to-5 pin adapter is required to send signals from Samsung devices via MHL over HDMI or VGA to a projector or TV. The 11-pin Samsung version is slightly longer than the standard 5-pin Micro USB.