Microsoft optimized the Bluetooth pairing experience ... driver will then download/install and automatically pair Microsoft Modern Keyboard with Fingerprint ID to your Surface or Windows PC.
[DastardlyLabs] saw a video about converting a PS/2 keyboard to Bluetooth and realized he didn’t have any PS/2 keyboards anymore. So he pulled the same trick with a USB keyboard. Along the way ...
Incase is the company that continued making Microsoft’s hardware accessories after the Windows maker didn't want to do it ...