usb_load="YES"

From: Graham Perrin <grahamperrin_at_gmail.com>
Date: Thu, 30 Jun 2022 05:17:16 UTC
usb(4)

<https://www.freebsd.org/cgi/man.cgi?query=usb&sektion=4&manpath=FreeBSD#SYNOPSIS>

As an example: in what type of situation might it be desirable, or 
necessary, to load the driver as a module at boot time?