Installing Latest Kernel on Debian Buster HOWTO  
Enable backports:
echo deb buster-backports main contrib non-free | sudo tee /etc/apt/sources.list.d/buster-backports.list
sudo apt update
sudo apt upgrade
Install backported Kernel:
sudo apt install -t buster-backports linux-image-amd64
Install the firmware:
sudo apt install -t buster-backports firmware-linux firmware-linux-nonfree
Then open /etc/modules and add new modules to be loaded at boot time.
sudo vi /etc/modules
For instance, if you want to add the nct6775 module, just add one line to /etc/modules with the content nct6775. Then, reboot:
sudo reboot
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