This actually works quite well.
I can not forgive, despite the full credit, since the part does have a connection for an external power source, but no mitliefert. So I had to get a buy it. Now I can not say it is due to the source, or the Discman itself, but it takes only a slight turn of the Discman and you're out of the thing. The male appears to have only an extremely thin connected to the input, so that almost every move cuts the power supply. Then you have to back up everything on the plug around play has been resumed.
Either way I can personally recommend buying only partially. Anyone who does not rely on external power supply, can buy it without hesitation. For the rest: A risk remains that it is very unwieldy.