I'm just starting my AR4 build. In this build I wanted to change the way the USB cables connected to the controller. Here's what I decided to try out. Worked great on my CNC router project. I bought one for the Teensy and another for the Arduino.
Micro USB 5 Pin Mount, 0.3 Meter Micro USB Male to Female Flush Mount Panel Mount Extension AUX Cable
I did the same thing. works great :)