The AV-HS04M2 is a discontinued optional expansion board designed specifically for Panasonic HS400 and HS450 video production switchers. This accessory provides two additional analogue component video inputs (YPbPr) to the main production switcher system. As an internal installation board, it enhances the connectivity options for broadcast and professional AV environments requiring analogue signal integration. The board enables simultaneous processing of component video sources through proper signal routing within the HS400/HS450 production switcher framework, supporting standard broadcast quality analogue video workflows.