---
name: "tht"
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/tht"
---

# tht(4)

Tehuti Networks 10Gb Ethernet device

## NAME

**tht**, **thtc** – Tehuti Networks 10Gb Ethernet device

## SYNOPSIS

**thtc\* at pci?** **tht\* at thtc?**

## DESCRIPTION

The **tht** driver provides support for the Tehuti Networks 10 Gigabit Ethernet controllers and adapters, including the following:

- TN3017-S 10 GbE Single Port XAUI Server Controller

- TN3017-D 10 GbE Dual Port XAUI Server Controller

- TN7581-D 10 GbE Dual XFP Server Adapter

- TN7585-D 10 GbE Dual CX4 Low Profile Server Adapter

- TN7588-S 10 GbE Single 10GBASET Low Profile Server Adapter

- TN7588-D 10 GbE Dual 10GBASET Low Profile Server Adapter

- TN7589-S 10 GbE Single CX4 Low Profile Server Adapter

## FILES

The adapter needs a firmware file, which is loaded on demand by the driver when the device is attached:

- */etc/firmware/tht*

  ## SEE ALSO

[arp(4)](/arp/4.md), [ifmedia(4)](/ifmedia/4.md), [intro(4)](/intro/4.md), [netintro(4)](/netintro/4.md), [pci(4)](/pci/4.md), [ifconfig(8)](/ifconfig/8.md)

## HISTORY

The **tht** driver first appeared in OpenBSD 4.2.

## AUTHORS

The **tht** driver was written by David Gwynne ⟨*dlg@openbsd.org*⟩.