A conferencing device includes a power supply, a processor, a video out module, and a USB hub in communication with the processor and drawing power from the power supply. The conferencing device is configured to provide power from the power supply to an external host device in communication with the USB hub, receive control signals and video data from the external host device, and place video data from the external host device at a video out port of the conferencing device. Embodiments herein discuss the switching between and/or simultaneous presentation of video data for placement at the video out port as between two or more external host devices connected to the conferencing device based on the control signals sent from the external host devices. The conferencing device may be connected to another conferencing device to create a single logical conferencing device that can handle an expanded number of external host devices.