Dune HD Duo 4K (FULL MODEL not BASE Model) is an advanced solution for playback of 4K and Full HD video, high-quality audio, IPTV and VOD content, digital TV channels. This media player sets an entirely new standard for home entertainment. It supports the majority of digital audio and video formats, including the most modern HEVC video codec with one billion colors (10-bit color encoding), all modern 3D video standards such as MVC, Side-by-Side and Top-and-Bottom, audiophile HD audio with high resolution up to 24-bit / 192 KHz and Super Audio CD up to DSD512, etc.. Dune HD Duo 4K is equipped with two internal 3.5" SATA HDD racks with hot-swap support, three USB ports, SD card slot, 1Gbit Ethernet, 802.11ac Dual Band 2T2R Wi-Fi, built-in DVB-T/T2/C tuner (option), built-in Z-Wave controller (option), and a variety of advanced audiophile features, including the famous ESS SABRE32 Reference DAC, XLR balanced stereo audio output, S/PDIF audio input, USB audio input (option). Specification Media processor: Sigma Designs SMP8758 RAM: 2GB Flash memory: 8GB Connectors: 3xUSB host, SD card slot, HDMI output, optical S/PDIF audio output, coaxial S/PDIF audio output, composite video output, RCA stereo audio output, XLR balanced stereo audio output, coaxial S/PDIF audio input, external IR port, Ethernet (10/100/1000Mbit), two external Wi-Fi antennas, DVB-T/T2/C RF input/output, 100V-240V AC input Internal storage: Two internal HDD racks for SATA HDD 3.5", SD card slot Media Sources: Internal HDDs (SATA), external HDDs (USB), external optical disc drives (USB), USB devices (USB flash drive, USB card reader, etc), built-in SD card slot, PC and NAS in local network (SMB, NFS, UPnP/DLNA, HTTP), other Internet and local network media sources....etc Check Manufacturers site for more info...