I had to insert it from the left as the hitch wire harness connection interfered with the lock when inserted from the right. The sound quality is so good that my clients think Im talking to them from my office. We like them. This clog is now a plastic of some sort and the insole is not any more comfortable than a regular pair of shoes. Secondly, the plug for the adapter is easily dislodged from the wall outlet. Very comfy but whats the purpose of half calf in these? More of a walk the dog or walk to work, If youre going in streams it will fill up. Also shoes came much earlier than expected Now, As a broadcast engineer, who has dealt with broadcast tables, home stereos of many ilks and various component systems down through the decades, I feel I can assert a word of authority on the subject. Okay - are you ready? These shoes are SO AMAZING. Tried to remove the right side of the cord and again (second picture) it looked like the internal part of the connection was coming out.