---
name: "upl"
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/upl"
---

# upl(4)

Prolific based host-to-host adapters

## NAME

**upl** – Prolific based host-to-host adapters

## SYNOPSIS

**upl\* at uhub?**

## DESCRIPTION

The **upl** driver provides support for Prolific PL2301/PL2302 based host-to-host USB connectors.

The **upl** driver appears as a point-to-point network interface and should be configured with [ifconfig(8)](/ifconfig/8.md) in the same way as other point-to-point interfaces. The **upl** device supports IPv4 only.

## HARDWARE

The **upl** driver supports the following adapters from the following vendors:

- Aserton

  - Bencent

  - Butterfly

  - Camtel

  - Inland

  - Longshine

  - PC Linq

  - Prolific

  - StarMount

  - Univex

  - VVMer

  Belkin, Entrega, and Xircom do *NOT* use this chip and are not supported by this driver.

## SEE ALSO

[netintro(4)](/netintro/4.md), uhub(4), [usb(4)](/usb/4.md), [ifconfig(8)](/ifconfig/8.md)

## HISTORY

The **upl** driver appeared in NetBSD 1.5. OpenBSD support was added in OpenBSD 2.9.