BZBGear BG-UHM 3-Port USB and HDMI Camera Selector and Mixer

The BG-UHM takes three video sources, one HDMI and two USB, and lets an operator switch between them or combine them into layouts such as picture-in-picture, side by side, or a large image with a small overlay. It is the box for a room that already owns a webcam, a document camera and a laptop.

Output goes to HDMI at up to 3840x2160 at 60 Hz, and to a USB-C port that a computer sees as a UVC camera with UAC audio, so the mixed picture drops straight into a conferencing application. Layouts are set from a web interface, and the RJ45 port supports PoE to 802.3af. Control connectors are RS-232 and a 3.5 mm phoenix terminal.