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

# ulpt(4)

USB printer support

## NAME

**ulpt** – USB printer support

## SYNOPSIS

**ulpt\*   at uhub?**

## DESCRIPTION

The **ulpt** driver provides support for USB printers that follow the printer bi- or uni-directional protocol. The bits in the minor number select various features of the driver.

| | |
| --- | --- |
| *Minor Bit* | *Function* |
| 64 | Do not initialize the device on the port. |

## FILES

- */dev/ulpt?*

  For some HP LaserJet printer models (1000, 1005, 1018, 1020), the driver needs at least version 1.0 of the following firmware files, which are loaded when a printer is attached:

- /etc/firmware/ulpt-hp1000

  - /etc/firmware/ulpt-hp1005

  - /etc/firmware/ulpt-hp1018

  - /etc/firmware/ulpt-hp1020

  These firmware files are not free because HP refuses to grant distribution rights. As a result, even though OpenBSD includes the driver, the firmware files cannot be included and users have to download these files on their own. A port which can download and install the firmware can be found in */usr/ports/sysutils/firmware/ulpt*.

## SEE ALSO

[intro(4)](/intro/4.md), [lpt(4)](/lpt/4.md), uhub(4), [usb(4)](/usb/4.md)

## HISTORY

The **ulpt** driver appeared in NetBSD 1.4. OpenBSD support was added in OpenBSD 2.7.