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

# uncm(4)

USB Network Control Model Ethernet device

## NAME

**uncm** – USB Network Control Model Ethernet device

## SYNOPSIS

**uncm\*  at uhub?**

## DESCRIPTION

The **uncm** driver provides support for USB Network Control Model (NCM) Ethernet devices, commonly used for USB tethering.

**uncm** should work with devices that provide USB tethering via NCM, such as most Android devices.

## SEE ALSO

[intro(4)](/man/intro/4.md), [netintro(4)](/man/netintro/4.md), [usb(4)](/man/usb/4.md), [hostname.if(5)](/man/hostname.if/5.md), [ifconfig(8)](/man/ifconfig/8.md)

## HISTORY

The **uncm** device driver first appeared in OpenBSD 8.1.

## AUTHORS

The **uncm** driver was written by Jan Schreiber ⟨*jes@posteo.de*⟩ and is based on the [umb(4)](/man/umb/4.md) driver.