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

# if\_smsc(4freebsd)

USB SMSC LAN9xxx Fast Ethernet driver

## NAME

**smsc** – USB SMSC LAN9xxx Fast Ethernet driver

## SYNOPSIS

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

```
if_smsc_load="YES"
```

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

**device uhci** **device ohci** **device usb** **device miibus** **device uether** **device smsc**

## DESCRIPTION

The **smsc** device driver provides support for USB Fast Ethernet adapters based on the SMSC LAN9xxx chipsets.

For more information on configuring this device, see [ifconfig(8)](/ifconfig/8.md).

## HARDWARE

The following devices are supported by the **smsc** driver:

- SMSC LAN9500, LAN9500A, LAN9505 and LAN9505A based Ethernet adapters

- SMSC LAN89530, LAN9530 and LAN9730 based Ethernet adapters

- SMSC LAN951x Ethernet adapters with integrated USB hub

## SEE ALSO

[arp(4)](/arp/4.md), [intro(4)](/intro/4.md), [miibus(4)](/miibus/4.md), [netintro(4)](/netintro/4.md), [usb(4)](/usb/4.md), [ifconfig(8)](/ifconfig/8.md)

## HISTORY

The **smsc** device driver first appeared in FreeBSD 10.0.

## AUTHORS

The **smsc** driver was written by Ben Gray ⟨*bgray@FreeBSD.org*⟩.