I was just reading this post a few minutes ago but it does not fully reply to my first questions.
How can I make the Differentiate a Green Dot logger from an old one. Do not want to spend 200$ for nothing?
You asked a clear question in English, and got no clear answer.
The answer is that you must make it clear to your supplier (seller) that you want a logger that is compatible with the newer model of console. If you are purchasing from a reputable seller, that should be all you need to do. But then, when you get the logger and plug it into the console, if it is not compatible, the console will produce a message that says that.
If you say how you are going to purchase the logger (or from what supplier), perhaps there is a more helpful answer.
Also, since the usb cable is very short, can we use a extension USB cable to connect to the Imac?
Yes.