So guys I have bought a Rapoo MT750S bluetooth mouse. Which is a Chinese mouse and a copy of a Logitech MX Master. I have heard that this mouse really works great in windows but, I have bought it for MBA 2017. The company in their operating system requirements didn't mention that it works on Mac OS X but, also didn't mention that it doesn't work. Yes, their features of mouse and software is only available for windows and I know that. But, I still decided to buy this mouse for Mac and using it by a third party software called "Steer mouse". Now the problem part: The mouse came with a 2.4g usb receiver with which its working fine but, the mouse BLUETOOTH doesn't even connect to the MacBook air's bluetooth and it has both 3.0 and 4.0 bluetooth and they both are not connecting. I tried pairing the mobile with the mouse even there the pairing didn't work. You guy's would say why you would buy a mouse which doesn't support Mac OS X and I agree with you totally but, there were users who were using this mouse on MacBooks and said using a third party software its working really fine but they did "complain frequent disconnection of bluetooth" But, mine doesn't even connect once. I don't want to use it with a usb receiver because MBA 2017 has only two USB ports I don't want to take the risk of loosening or damaging it cause it might or might not get repaired and why pay $40 for a bluetooth mouse to only use it with a usb receiver.