Pls do not plug and unplug the HDMI port when the hub is power on. Simply link your MacBook Pro to any HDTV, monitor or projector with HDMI input for an immersive experience. 4K 3D High Definition Sensory Experience Enjoy screen mirroring for all your video and gaming needs with USB Type-C to HDMI hub connectivity.Two 2.5" hard drives can be connected at one time. Multiple USB 3.0 Ports Expand Your Efficiency Extra 3 USB 3.0 ports are perfect for connecting keyboard mouse card reader hard drives and more USB devices to maximize efficiency.Q5: Does this USB C Hub support Apple SuperDrive? In order to seamlessly connect with MacBook Pro, there is no gap between adapter and MacBook Pro, remove the MacBook protective case before connecting the type C hub adapter.Q3: Does this USB C hub fit if the MacBook Pro has a protective case on? When they use at the same time, Thunderbolt 3 port can support max output, HDMI port can support max output.Yes, they can mirror or extend the screen simultaneously.Q2: Do the Thunderbolt 3 port and HDMI port can be used simultaneously for Video output? If you use all ports at one time, for the stable connection, a PD charging adapter(sold separately) is recommended for power supply.The MacBook may look great, but is short on slots. USB Type C is the port 9-in-1 USB C Hub Compatible macbook pro usb adpater, work for the latest. Allow connecting 2 2.5-in HDD/SSD at one time. Hama USB-C Hub, Connect2Mac, Multiport for Apple MacBook Air & Pro, 12 ports. Step 3: Release the keys and then turn on the Mac.Yes, All hub ports can work simultaneously,.