Support all Dreamcast NTSC 240p,480i, 480p, PAL 288p,576i. Support RGBS/VGA input signals. Output 1080P Full HD. Support 4:3/16:9 aspect ratio switch. (You need to turn off the power of Dreamcast console before switching the signal. Otherwise, the game screen will be affected) Video and Audio in Full Digital HDMI format with zero transmission loss! Provides advanced signal processing with great precision, colours and resolution! Hassle Free! Plug and Play, no additional USB power required. Works with the majority of HDMI enabled televisions and monitors. This is a RGBS/VGA to HDMI-compatible converter with switch of 4:3/16:9 game screen ratio switch for DREAMCAST console. It can outputs video and audio in full digital HDMI-compatible format and supports DREAMCAST display modes (NTSC 480i 480p, PAL 576i). With just a HDMI-compatible cable, plug and play for true-to-life video/audio effects on your TV/monitor, no external power supplies needed. Note: This product has a signal switch between RGB and VGA. You need to turn off the power of Dreamcast console before switching the signal. Otherwise, the game screen will be affected.