Chosen Solution

Hello, I’m having problems with both USB ports on my MacBook Pro 15” retina, mid 2015. I think they are both loose, if that’s possible. The left one seems looser than the right. When I insert a USB thumb drive or cable it disconnects super quickly. The right is a bit tighter when I plug something into it. It will work fine but if I bump it or move the computer is disconnects. Could these both be loose or is something else. Can these be replaced?

See if you can tighten the screws holding the I/O board in place. That failing you may have to replace the board. Here’s how: MacBook Pro 15" Retina Display Mid 2015 I/O Board Replacement