Very versatile product, read all MKV file formats compris.Possède an extensive connection (HDMI, ethernet, optical, composite, YUV, RCA, RGB). When you already have a home theater amp and external hard disks, this small box is a must, it acts as universal reader of everything that you will make him swallow its USB ports, plus it has an optical output for sound, plugging directly behind the amp HC lounge (for those who do not yet own amp with Input / Output HDMI 1.3).