---
name: "uow"
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/uow"
---

# uow(4)

Maxim/Dallas DS2490 USB 1-Wire adapter

## NAME

**uow** – Maxim/Dallas DS2490 USB 1-Wire adapter

## SYNOPSIS

**uow\* at uhub?** **onewire\* at uow?**

## DESCRIPTION

The **uow** driver provides support for the Maxim/Dallas DS2490 USB 1-Wire adapter.

The following adapters should work:

- iButton DS9490/DS9490B/DS9490R

  ## SEE ALSO

[intro(4)](/intro/4.md), [onewire(4)](/onewire/4.md)

## HISTORY

The **uow** driver first appeared in OpenBSD 4.1.

## AUTHORS

The **uow** driver was written by Alexander Yurchenko ⟨*grange@openbsd.org*⟩.