Read the product first! This is just the entrance! Second, the USB connector ensures that the VGA output only works on the back left or front right port on a 2019 MacBook Pro :) Edit: - I've had it for about 5 days now. It won't hold my charge on a MacBook, so the USB-C port is utterly useless. - Leaving the adapter plugged in causes my MacBook to overheat when closed (with and without the USB-C power input attached) - The USB-A port is intermittent and often disables my mouse or charging functions. (Only tried with this cable. - Haven't tested HDMI but I'm sure I'll find issues with it as it works intermittently too. Overall at first I thought it was good, I could have had a bad one and this is it Honestly how it starts and warms up - stops immediately completely 2/10Edit: No one has applied yet