Samsung AT&T Galaxy S2 ( SGH-i777) Cable, BoxWave [Micro USB to HDMI Cable] Micro / HDMI Adapter for Samsung Galaxy AT&T S2 ( SGH-i777) Uses Mobile High-Definition Link (MHL) version 1.0 technology Connects smartphones & smart devices to HD-TVs Uses no proprietary cables Uses generic micro-USB charging cable Transports audio and video with a single cable