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Cake day: November 27th, 2025

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  • They match the style of proprietary A/V control system ports used in 1990s conference rooms, Projector control interfaces, Crestron / AMX / Extron wall plates, RS-232 or RS-485 wiring inside custom housings.

    They were used to connect Projector control panels, Motorized screens, Audio/video switchers, Touch panels, Old teleconferencing gear.