This article describes the setup of USB (Universal Serial Bus) controllers.
To choose the right driver, first detect the used USB controllers. The lspci utility works nicely for this task:
lspci | grep --color -i usb
Portage knows the
usb USE flag. Some packages include or exclude support for USB based on this flag. As with all USE flags, can be set as a value of the USE variable in /etc/portage/make.conf or in /etc/portage/package.use.
emerge --ask sys-apps/usbutils