Review on 🔌 High-Quality 5-Pack DB9 Male to Male Serial Port Adapters by Your Cable Store - Ideal for RS232 Connections by Carlos Chan

Exactly what it says, well designed. This is the ideal width without overlapping the adjacent space. It is threaded so that the posts snap into place in the same direction as a regular cable. I had an issue with one side disconnecting at the host and the other side disconnecting at the point where I connect the null cable. When that happens I have to rotate it with my fingers.