The SB-5544BNC is a true matrix routing switcher for AV (Composite & Stereo Audio) signals with full support of NTSC or PAL Composite Video & Stereo Audio TV systems. It has (4) individual Composite Video (BNC connectors) and Stereo Audio inputs with (4) individual Composite Video (BNC connectors) and Stereo Audio outputs (audio output with volume control and AR/AL balance). Because it is a matrix router, any input may be routed to any output; or the same input may be routed to all outputs or any combination. It completely eliminates the need to constantly move around video audio input and output cables. The switcher is useful for matrix signals from composite video and stereo audio source devices (such as: VCRs, Camcorders, Video Game Consoles, Video CDs, DVDs, Satellite Receivers, CAT5 Set Top Boxes, etc.) to composite video/audio destination devices (such as: LCD TV, HDTV, Plasma displays, Projectors, etc.). Selection of inputs is made via front panel push buttons or an infrared remote control or RS-232 control by a computer. A RS-232 Windows GUI interface is provided for matrix routing control (Windows only).