... decode board as motherboard. It supports single-screen karaoke system,VOD system,DVD system, and supports HOST USB,SD Card,DVD Loader, SATA ... : Dolby AC-3 5.1 Audio Channel. DVD CSS (Content Scrambling System) decoding Reserved Analogue power amplifier, X1/4, X1/2, X2 ... +SATA Line+sensor+remote controller+power supply+CD disc with system files and karaoke make tool saftware and lessons. Detail manual ...