---
name: "uplcom"
section: "4freebsd"
platform: "linux"
package: "freebsd-manpages"
version: "12.2-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/uplcom/4freebsd"
---

# uplcom(4freebsd)

USB support for Prolific PL-2303/2303X/2303HX serial adapters driver

## NAME

**uplcom** – USB support for Prolific PL-2303/2303X/2303HX serial adapters driver

## SYNOPSIS

To compile this driver into the kernel, place the following lines in your kernel configuration file:

**device usb** **device ucom** **device uplcom**

Alternatively, to load the driver as a module at boot time, place the following line in [loader.conf(5)](/loader.conf/5.md):

```
uplcom_load="YES"
```

## DESCRIPTION

The **uplcom** driver provides support for various serial adapters based on the Prolific PL-2303, PL-2303X and PL-2303HX USB-to-RS232 Bridge chips.

The device is accessed through the [ucom(4)](/ucom/4.md) driver which makes it behave like a [tty(4)](/tty/4.md).

## HARDWARE

The **uplcom** driver supports the following devices and adapters:

- ADLINK ND-6530 USB-Serial Adapter

- Alcatel One Touch 535/735 Phone

- Alcor AU9720 USB-RS232 Serial Adapter

- AlDiga AL-11U Modem

- Alltronix ACM003U00 Modem

- Anchor Serial adapter

- ATEN UC-232A

- BAFO BF-800 and BF-810

- Belkin F5U257

- BenQ S81 Phone

- Corega CG-USBRS232R Serial Adapter

- Cressi Edy (Seiko) Diving Computer

- ELECOM UC-SGT Serial Adapter

- HAL Corporation Crossam2+USB IR commander

- Hama USB RS-232 Serial Adapter

- Hamlet exaggerate XURS232

- HP LD220 Point-Of-Sale (POS) Display

- IOGEAR UC-232A

- I/O DATA USB-RSAQ, USB-RSAQ2, USB-RSAQ3 and USB-RSAQ5

- iTegno WM1080A GSM/GFPRS Modem

- iTegno WM2080A CDMA Modem

- Leadtek 9531 GPS

- Micromax 610U Modem

- Microsoft Palm 700WX

- Mobile Action MA-620 Infrared Adapter

- Motorola Cables

- Nokia CA-42 Cable

- OTI DKU-5 cable

- Panasonic TY-TP50P6-S flat screen

- PLX CA-42 Phone Cable

- PLANEX USB-RS232 URS-03

- Prolific Generic USB-Serial Adapters

- Prolific Pharos USB-Serial Adapter

- RATOC REX-USB60

- Radio Shack USB Serial Cable

- Sagem USB-Serial Adapter

- Samsung I330 Phone Cradle

- Sandberg USB to Serial Link (model number 133-08)

- Sanwa KB-USB2 Multimeter cable

- Siemens/BenQ EF81, SX1, X65 and X75 Mobile Phones

- Sitecom USB-Serial Adapter

- SMART Technologies USB-Serial Adapter

- Sony QN3 Phone Cable

- Sony Ericsson Datapilot

- Sony Ericsson DCU-10 and DCU-11 (Susteen) USB Cables

- SOURCENEXT KeikaiDenwa 8 (with and without charger)

- Speed Dragon USB-Serial Cable

- Syntech CPT-8001C Barcode Scanner

- TDK UHA6400 and UPA9664 USB-PHS Adapters

- TRENDnet USB to Serial Converter (TU-S9)

- Tripp-Lite U209-000-R USB-Serial Adapter

- UIC HCR331 Magnetic Stripe Card Reader

- UIC MSR206 Magnetic Stripe Card Reader

- Willcom W-SIM DD PHS terminal.(WS002IN)

- YC-Cable USB-Serial Adapter

- Zeagle N2iTion3 Diving Computer

## SYSCTL VARIABLES

The following variables are available as both [sysctl(8)](/sysctl/8.md) variables and [loader(8)](/loader/8.md) tunables:

- *hw.usb.uplcom.debug*

  Debug output level, where 0 is debugging disabled and larger values increase debug message verbosity. Default is 0.

## FILES

- */dev/ttyU\**

  for callin ports

- */dev/ttyU\*.init*

  - */dev/ttyU\*.lock*

  corresponding callin initial-state and lock-state devices

- */dev/cuaU\**

  for callout ports

- */dev/cuaU\*.init*

  - */dev/cuaU\*.lock*

  corresponding callout initial-state and lock-state devices

## SEE ALSO

[tty(4)](/tty/4.md), [ucom(4)](/ucom/4.md), [usb(4)](/usb/4.md)

## HISTORY

The **uplcom** driver appeared in NetBSD 1.6. This manual page was adopted from NetBSD by Tom Rhodes ⟨*trhodes@FreeBSD.org*⟩ in April 2002.