Second product, and this time it's the right! I use it to connect a chromebook a vidéprojecteur. Not easy to find the right system. It allows to attach an HDMI cable from the computer to a projector that works with a VGA output. It adapts and converts. (The first product adapted suelement) In short, computer - HDMI cable - with vga converter--to vga outlet for projector. It comes with a charger / feeder but it is not necessary to use it, it can run on battery computer chromebook. 11cmx8cm small light plastic white casing. SUPER HAPPY Works!