Renders as:
```
IT8613HWM(4) FreeBSD Kernel Interfaces Manual IT8613HWM(4)
NAME
it8613hwm – device driver for the ITE IT8613E Super I/O hardware monitor
SYNOPSIS
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
device superio
device it8613hwm
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
it8613hwm_load="YES"
DESCRIPTION
The it8613hwm driver supports reading the temperature sensor and fan
speed from the hardware monitor present in the IT8613E Super I/O chip.
There are 3 temperature sensor channels, not all may be connected on the
mainboard. These are reported through a sysctl node named
dev.it8613hwm.0.temperature%d, where %d ranges from 0 to 2 inclusive.
There are also 3 fan speed channels, again not all may be connected on
the mainboard, reported in RPM via dev.it8613hwm.0.fan%d.
EXAMPLES
To get the current values for all temperature sensors and fans:
$ sysctl dev.it8613hwm
dev.it8613hwm.0.fan2: 1470
dev.it8613hwm.0.fan1: 648
dev.it8613hwm.0.fan0: 0
dev.it8613hwm.0.temperature2: 35C
dev.it8613hwm.0.temperature1: 40C
dev.it8613hwm.0.temperature0: 49C
As can be seen in this example, there is no fan connected to fan0.
SEE ALSO
superio(4), sysctl(8)
AUTHORS
The driver and manual page were written by Johannes Totz
<jo@bruelltuete.com>.
BUGS
No public datasheet is available for this chip. The information to write
this driver was obtained through trial-and-error and datasheets for
similar chips.
FreeBSD 13.2-STABLE May 8, 2023 FreeBSD 13.2-STABLE
```