---
title: "WIZ550io and Raspberry Pi 4"
url: "https://maker.wiznet.io/forum/14572"
markdown_url: "https://maker.wiznet.io/forum/14572/md"
type: "Forum topic"
category: "IO Modules"
author: "matt.vanek"
created: "2022-06-08T15:40:41+09:00"
last_activity: "2025-04-04T16:56:29+09:00"
language: "en"
views: 386
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# WIZ550io and Raspberry Pi 4

## Question

Asked by matt.vanek on 2022-06-08 in IO Modules.

Hello,
I am trying to attach a second ethernet port to a Raspberry Pi 4 using a WIZ550io module, however the OS does not seem to be able to find the driver for it. The Raspberry Pi OS has wiznet drivers built into the kernel by default, which do show up as being loading when running lsmod, but it fails to create a new ethernet connection. After reviewing the source code for the drivers, I have found that the drivers are rather old (~2012). Is this driver compatible with the WIZ550io? Is this driver compatible with the Raspberry Pi 4? Are there any newer drivers available? Does the ioLibrary contain a linux kernel driver? Or can it be built into a kernel driver?

## Replies

### Reply 1 by sanjaay22, 2025-04-04

Given that you're already utilizing the Raspberry Pi 4, which is a good option, it's important to keep in mind that driver support plays a major role in hardware compatibility. The Raspberry Pi OS's built-in WIZnet drivers are rather outdated and might not support the WIZ550io in its entirety right out of the box. It may be necessary to manually modify or use WIZnet's ioLibrary to generate a more recent driver. [**Robocraze**](https://robocraze.com/)is a wonderful site to find authentic [**Raspberry Pi**](https://robocraze.com/collections/raspberry-pi)devices and accessories if you're searching for dependable hardware or replacements.

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Source: https://maker.wiznet.io/forum/14572