My hard drives disconnect if I breathe on the cable too hard. The USB-C/Thunderbolt 3 port on the New Macbook Pro is horrible. This design decision is a disaster since the port is also used by harddrives. I suspect that since they tossed the magsafe port, they attempted to make a port that fits loosely enough that should you trip on the cord, the cord will come out easily. I canвЂ™t believe Apple didnвЂ™t make these ports without any sort of locking mechanism. Give feedback if you take it in and they actually have made it better. Taking it to a center was an all day thing in my area and I don't have time right now to do it again. I guess I will have to put a rubber band on it to keep expensive hyper drive adapter attached to my expensive $2500.00 MacBook Pro. As the person below said I think they have a cheap part problem and really aren't fixing the problem. It has a totally different feel on left side than right side.

If you take it in and they say they fixed it make sure you take you adapters and connectors with you so you can test it and don't let them tell you it's working properly. I still get my external monitor and external hard drive disconnecting randomly. I really didn't notice a difference in how the adapter or Apple USB-C connectors snapped into unit but they assured me that it fit properly. Went back in within two days to pick up and they said they replaced the power unit. Took it into Apple Center, they sent it out for repair. I had the same problem on left side of my 2017 MacBook Pro 15' I purchased in September.

Apple mac pro usb ports