That first eBay link appears to be good!
Second one appears ( to me ) to be a Bluetooth phone adaptor. Cause of the microphone. Very much could be wrong.
Do report back as I'm currently using a **** iPhone adaptor as my connect 2 has the iPhone 30 pin plug, I'm using an adaptor which doesn't...
I have an old version of this.
You can buy one of the cheap £3 USB Bluetooth receivers and plug it into the connect 2 USB socket.
This is an expensive one.
There is a video on YouTube about how to get the motor arm/ball into the clip. You have to take it in from the side and slide it across the clip. It's an easy task, I've recently replaced these clips and takes less then 10 minutes...... on the offside anyway, battery out gives you all the access...