---
name: "fins"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/fins"
---

# fins(4)

Fintek F71805F LPC Super I/O

## NAME

**fins** – Fintek F71805F LPC Super I/O

## SYNOPSIS

**fins0 at isa? port 0x4e**

## DESCRIPTION

The **fins** driver provides support for the Fintek F71805F, F71806, F71862, and F71882 LPC Super I/O ICs.

The hardware monitor provides hardware monitoring capabilities to be used with the [sysctl(8)](/sysctl/8.md) interface.

The F71805F hardware monitor supports 15 sensors:

| | | |
| --- | --- | --- |
| **Sensor** | **Units** | **Typical Use** |
| IN0 | uV DC | Internal 3.3Vcc |
| IN1 | uV DC | Memory Vtt |
| IN2 | uV DC | RAM Vcc |
| IN3 | uV DC | Chipset V |
| IN4 | uV DC | +5V |
| IN5 | uV DC | +12V |
| IN6 | uV DC | Vcc 1.5V |
| IN7 | uV DC | Vcore |
| IN8 | uV DC | Vsb |
| IN9 | uV DC | Vbat (optional) |
| Temp1 | uK | CPU Temperature |
| Temp2 | uK | Motherboard Temperature |
| Temp3 | uK | (undefined) |
| Fan0 | RPM | CPU Fan |
| Fan1 | RPM | User Fan1 |
| Fan2 | RPM | User Fan2 |

## SEE ALSO

[intro(4)](/intro/4.md), [isa(4)](/isa/4.md), [sensorsd(8)](/sensorsd/8.md), [sysctl(8)](/sysctl/8.md)

## HISTORY

The **fins** driver first appeared in OpenBSD 4.4.

## AUTHORS

The **fins** driver was written by Geoff Steckel.