Practical but not perfect
This adapter is really useful for connecting your tablet or phone to an external screen or projector, either in mirror mode or in desktop mode. This is really smooth and convenient. The adapter has a USB A port that allows you to connect a flash drive, but not a hard drive: also great.
Finally, it has a last USB c port, to plug in another USB stick, or to connect the tablet to the power supply to charge it while using it: IT DOES NOT WORK and that's a shame!