I bought this cable because I was looking for a short length, unfortunately, it will end up in a drawer because it works half the time. After many tests, I still do not explain the cause. I feel that the signal must be "activated" by another cable (amazon for example) before it will work. In short, a mystery. So I recommend. If someone can point me to a short cable (20-50 cm) of good quality and not too expensive, I'm interested ...