Actually, it should work, this is the way to do it: To establish the connection
In order for your computer to find the Bluetooth mouse, simply establish the connection via Windows. It works like this:
1. make sure that Bluetooth is activated. 2.
Press the Windows icon in the bottom left corner. 3.
Then click on the cogwheel symbol to call up the settings. 4.
Now select the menu "Devices". 5.
Switch to the menu "Bluetooth and other devices". 6.
Now switch on your Bluetooth mouse. 7.
Then press the "Add Bluetooth or other device" button in Windows and click on "Bluetooth". 8.
8. follow the Windows instructions so that your devices can be paired and finally click on "Done".

I am currently testing it with my Lenovo Yoga 370, but it does not recognise the mouse :-(. I have to use the dongle unfortunately....