The Geek Stuff posted a tutorial on the modprobe utility

modprobe utility is used to add loadable modules to the Linux kernel. You can also view and remove modules using modprobe command. Linux maintains /lib/modules/$(uname-r) directory for modules and its configuration files (except /etc/modprobe.conf and /etc/modprobe.d).

  Linux modprobe Command Examples to View, Install, Remove Modules