There are a few different ways to find your Intel RST driver for Windows 10. The first way is to check your computer's manufacturer website. Many manufacturers will have a section for drivers and downloads, where you can find the Intel RST driver for your specific model of computer.
Another way to find the Intel RST driver is to use the Windows Update tool. To do this, open the Start menu and type "Update" into the search box. Click on the Windows Update settings, and then check for updates. If there are any available updates, they will be downloaded and installed automatically.
If you can't find the Intel RST driver using either of these methods, you can try downloading it from the Intel website directly. Go to http://www.intel.com/support, and then enter your computer's model number into the search box. This will bring up a list of drivers and downloads for your model, where you should be able to find the Intel RST driver.