I have an old Kingston 2 GB USB flash drive. I believe it was bought in 2006.
When I plug it into the right hand side USB port of a 2012 retina MacBook Pro, nothing happens. When I plug it into the left hand side port, it works fine.
Does this indicate a problem with the computer and its ports? Does it indicate a problem with the USB drive?
All other devices I tried worked with both the left and right hand side USB port.