Works great1 I have two dogs running around me with my MacBook Pro15". The mag safe has saved my computer & ports from damage several times. I only use it for charging, which there are no issues; I cannot comment on data speed.
The product is great but it took over a month and a half to get here love it and would recommend getting it but again shipping took forever. I ordered it a month before Christmas and it go here January 17.
I use two of them, one is connected to an USB3 hub and charge my laptop, another one is connected to an external battery. It works well, it fixes the USB-C port design problem.
The only issue: sometimes the hub is not recognized, and I have to disconnect/reconnect or apply pressure on it. Not a big deal to keep safe the port.
The USB-C connector seemed to be too long to make a reliable contact, and as a result, the laptop wouldn't charge unless you applied pressure with a finger. Everything else seemed fine.