---
name: "snd_cs4281"
section: "4"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/snd_cs4281"
---

# snd\_cs4281(4)

Crystal Semiconductor CS4281 PCI bridge device driver

## NAME

**snd\_cs4281** – Crystal Semiconductor CS4281 PCI bridge device driver

## SYNOPSIS

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

**device sound** **device snd\_cs4281**

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

```
snd_cs4281_load="YES"
```

## DESCRIPTION

The **snd\_cs4281** bridge driver allows the generic audio driver [sound(4)](/sound/4.md) to attach to the CS4281 sound card.

## HARDWARE

The **snd\_cs4281** driver supports the following sound cards:

- Crystal Semiconductor CS4281

## SEE ALSO

[sound(4)](/sound/4.md)

## HISTORY

The **snd\_cs4281** device driver first appeared in FreeBSD 4.3.

## AUTHORS

Orion Hodson ⟨*O.Hodson@cs.ucl.ac.uk*⟩