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

# uark(4)

Arkmicro Technologies ARK3116 based USB serial adapter

## NAME

**uark** – Arkmicro Technologies ARK3116 based USB serial adapter

## SYNOPSIS

**uark\* at uhub?** **ucom\* at uark?**

## DESCRIPTION

The **uark** driver supports Arkmicro Technologies ARK3116 based serial adapters.

The following devices should work with the **uark** driver:

```
HL USB-RS232
HugePine USB-UART
KQ-U8A Data Cable
Skymaster USB to RS232
```

## SEE ALSO

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

## HISTORY

The **uark** device driver first appeared in OpenBSD 4.0.

## AUTHORS

The **uark** driver was written by Jonathan Gray ⟨*jsg@openbsd.org*⟩.

## CAVEATS

Setting hardware flow control is not currently supported. It is not yet known how to ask the hardware to send a break.

Arkmicro Technologies do not reply to requests of documentation for their products.