Review on 4K / 30Hz USB-C to HDMI Adapter - 3-in-1 Type-C Converter Cable for MacBook Pro, MacBook, Mac Pro, iMac, Chromebook, and USB 3.0 Type-C Devices (2017/2018) by Rob Sanchez

I received it quickly. I connected the HDMI cable and then my phone. My phone screen was reflected on the LARGE screen. Using my phone charger cable I connected the adapter and it seemed like my phone (Samsung Galaxy x9+) with the extra power went into "mouse mode" where touching the phone screen would activate the mouse pointer on the big screen. Picture quality was good and I'm looking forward to it working with something better than a weak 2G or 3G signal. Still a learning experience for me. I'm a phone novice.