The device in the image is a Swallows 200M HDMI KVM IP Extender, which allows for remote control of a computer over a local area network. Key features and information include:
It extends HDMI and USB signals up to 200 meters using CAT5e/6/6a/7 cable.
It supports point-to-point, point-to-multipoint, and cascade connection modes.
It enables control of a computer with a keyboard and mouse from a remote location.
It supports resolutions up to 1080p.
It's based on TCP/IP standard.
It has a transmitter and receiver unit.
It supports IR remote control.
It is plug and play with a pure hardware design.