---
name: "ulpt"
section: "4"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["linux", "freebsd", "openbsd"]
url: "https://new.carta.tech/ulpt"
---

# ulpt(4)

USB printer support

## NAME

**ulpt** – USB printer support

## SYNOPSIS

**device** **ulpt**

In [loader.conf(5)](/loader.conf/5.md): **ulpt\_load="YES"**

## 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 (reset) the device on the port. |

Some printers cannot handle the reset on open; in case of problems try the *unlpt* device.

## HARDWARE

The **ulpt** driver provides support for USB printers and parallel printer conversion cables, including the following:

- ATen parallel printer adapter

- Belkin F5U002 parallel printer adapter

- Canon BJ F850, S600

- Canon LBP-1310, 350

- Entrega USB-to-parallel printer adapter

- Hewlett-Packard HP Deskjet 3420 (P/N: C8947A #ABJ)

- Oki Data MICROLINE ML660PS

- Seiko Epson PM-900C, 880C, 820C, 730C

## FILES

- */dev/ulpt?*

  device with reset

- */dev/unlpt?*

  device without reset

## SEE ALSO

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

## HISTORY

The **ulpt** driver appeared in NetBSD 1.4. This manual page was adopted from NetBSD by Tom Rhodes ⟨*trhodes@FreeBSD.org*⟩ in April 2002.