I have a mouse that I bought from eBay and has two buttons on the side. For some reason, these keys don't do anything. In the modifier keys section of the keyboard settings, it called the mouse "SiliconWin mouse", I changed all the keys to command and no command worked. I thought these keys served no purpose but I later found if I pressed an application in the dock with the key, it would do the same thing as a right-click. Again I checked and tried to use the keys as right-clicks but did not work. Is it possible to change the functionality of the key?
P.S.
I tried setting keyboard up and it asked me to press the button to the right of shift, I pressed everything and did not work.
If I search up SiliconWin, it comes up with Windows driver and no mac drivers.
Best Answer
You have found an unfortunate fact of life living in the Mac world, a lot of hardware is Windows only. Yeah you can plug it in but without the correct drivers you will be lucky to get even minimal use out of the device.
If your SiliconWin mouse is not working out of the box with your Mac and there are not drivers provided by the manufacturer then there is little you can do in macOS to properly configure the device.
There is a "Universal USB device Driver" that has been available on the Mac for a long time, USB Overdrive.
Though I have never used it myself I have seen lots of discussions that point to that as a solution to exactly the problem you have. It's not free, a license will cost you $20. I imagine you could download it and give it a try and see if it allows you to do what you need to do. But at twenty bucks it costs as much (or more) as a cheap mouse so the economics of the situation may not be in your favor.