---
title: "MAC Address Assignment"
url: "https://maker.wiznet.io/forum/12243"
markdown_url: "https://maker.wiznet.io/forum/12243/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "ronakbhalani"
created: "2017-04-12T04:15:12+09:00"
last_activity: "2017-05-04T08:40:13+09:00"
language: "en"
views: 9014
replies: 2
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# MAC Address Assignment

## Question

Asked by ronakbhalani on 2017-04-12 in Ethernet Chips.

1. W5500 doesn’t come up with embedded MAC address. So what it the procedure to get MAC address for the chip that I purchase.

2. Is there any support from Wiznet wrt getting MAC address for the chips that we will be purchasing?

Thanks,
Ronak Bhalani

## Replies

### Reply 1 by Eugeny, 2017-04-12

![](https://avatars.discourse-cdn.com/v4/letter/r/ecccb3/48.png) ronakbhalani:

> 1. W5500 doesn’t come up with embedded MAC address.

Most probably because W5500 is a chip, and not complete network interface card.

![](https://avatars.discourse-cdn.com/v4/letter/r/ecccb3/48.png) ronakbhalani:

> So what it the procedure to get MAC address for the chip that I purchase.

If you need unique identifier so that no one another network card in the world is having the same MAC address you go here: <https://regauth.standards.ieee.org/standards-ra-web/pub/view.html#registries>. But you can assign any MAC address to your card given that there’s no another card with the same MAC address in the local network.

### Reply 2 by ronakbhalani, 2017-04-25

Thanks.

We are using Microchip’s RTC which also provides factory programmed MAC address.

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Source: https://maker.wiznet.io/forum/12243