The KaptivoCast is a small hardware accessory that can typically be placed or mounted near the HDMI output device (e.g. monitor or video codec).
Included with the KaptivoCast is a power supply, Ethernet cable, and HDMI cable. It supports Power over Ethernet (PoE) so the power supply may be optional depending on your setup.
The KaptivoCast also includes a factory restore button that restores the settings of the device.
For more detailed information on the hardware, you can download and review the KaptivoCast Data Sheet.