1. There is something wrong with the identification gold finger on the left side of the host or the cable.
2. If Ringcon is damaged, it will lead to poor contact.
3. The fitness circle has been used for too long, which leads to the failure of the connection function.
If this happens, you can try to update the handle or contact after-sales service for maintenance. If the problem still exists, I suggest you consult relevant people to solve it.