This is a Type-C to DVI, HDMI and VGA Adapter. It allows you to transmit signals from a Type-C source to a high definition DVI or HDMI or VGA display (TV sets, projectors, etc). It can work on Macbook or Google new Chromebook Pixel and other USB-C supported devices.
Note: If two or three of the outputs are connected, then only one output can receive the input signal, the priority sequence is: DVI, HDMI, VGA