The Apple USB Type-C Digital AV Multiport Adapter lets you connect your Mac with USB Type-C or Thunderbolt 3 port to an HDMI display, while also connecting a standard USB Type-A device and a USB Type-C charging cable. It supports resolutions up to 3840 x 2160 @ 30 Hz or 1920 x 1080 @ 60 Hz.
Note: The Apple USB Type-C Digital AV Multiport Adapter is not compatible with the G-Tech G-DRIVE mobile USB 3.0 Hard Drive.