The USB3C-VGACAB-WPD is a USB (Universal Serial Bus)-C to VGA Adapter (DP Alt-mode) with a USB (Universal Serial Bus)-C charging port. It is designed to transmit signals from USB (Universal Serial Bus)-C computers to VGA monitors so that you can watch videos or slideshows on the big screen. It also features a USB (Universal Serial Bus)-C female port so you can charge the host computer & supply power for the adapter simultaneously. It can work on Macbooks or Googles new Chromebook Pixel as well as other USB (Universal Serial Bus)-C supported devices.