I need a bluetooth 4 usb dongle for Mojave

[skiabox]

Hello guys.
I am running Mojave on a MacBook Pro mid 2010.
I am looking for a bluetooth 4 usb dongle because my MacBook Pro is not supporting bluetooth v4.
I am using a magic keyboard 2 and a Magic Trackpad 2 and the trackpad has some issues so I want to try to use them with bluetooth 4.
Thank you!

 

[skiabox]

I've bought Asus USB-BT400.
It is supposed to work with my MacBook Pro model.
Any ideas on how to do it?
You can be as technical as you want since I am a professional software developer.
Thank you!