Hi, I was able to charge my macbook 2015 but when it came to data transfer speeds I was getting about 30-40 mb/s via Samsung SSD 860. I discovered that if I flipped the usb-c plug in a certain orientation I could get the full bandwidth of the device. If i plugged it in the flip side data transfer was slow. Anyone know why this happens and if there is a way to fix it without Apple gouging me for a repair? Thanks.