This document is a product manual printed by NEC Viewtechnology, Ltd. in Japan in 2004-2005, which introduces the VT676/VT670/VT575/VT470 VT47 model projectors. The projector has multiple input and output interfaces, including audio input, video input, computer input, and monitor output. Additionally, the projector comes with a power cable and an RGB signal cable. Users can connect these cables to connect the projector to a computer or other devices to transmit and control images and sound.