USB-C (using the USB 3.1 protocol) to HDMI 1.4, USB 3.0 (downwards
compatible to USB 2.0) and USB-C (Power Delivery) adapter for connecting
and transfering audio/video signal, data and power from the MacBook 12"
with USB-C port.
The HDMI port supports HDMI 1.4 and resolutions
up to 1080p and even UHD 4K to be displayed on an external display,
projector or TV while transfering the audio signal in digital
multi-channel quality. Through USB 3.0, data can be transferred at up to
5 Gbps. The USB-C port allows to supply the connected devices such as
an external USB HDD with power while charging the MacBook 12" at the
same time (Power Delivery).