Connect Airpods with Bluetooth receiver?

I have Airpods and I want to connect them to my notebook and electric piano (of course not at the same time). In search of a solution, I came across the following Bluetooth receiver: https://www.amazon.de/...00QK372UC/

I can connect this to the electric piano via a jack plug or to my notebook via USB, so far so good.

But how do I connect the Airpods to the Bluetooth receiver? Nowhere is there a display in which I can connect the respective device.

Unfortunately, I'm not an IT brain and hope for an uncomplicated answer.

What exactly do you expect from the AirPods?

You need a Bluetooth transmitter, a German transmitter that transmits the music signal from the notebook or electric piano to the AirPods, and no receiver (receiver), or at least a device that is suitable for receiving and transmitting, a so-called transceiver.

Thanks for your answer Matthias.

I would like to hear the sound of the electric piano with the AirPods or to be able to use it to make calls on a laptop.

Can you tell me if this is the right product? Unfortunately I'm a complete layperson.

https://www.amazon.de/...07VCCQNPT/

No, you need a Bluetooth transceiver to make calls, a device that can send and receive via Bluetooth.