---
title: "1-to-many connection"
url: "https://maker.wiznet.io/forum/12861"
markdown_url: "https://maker.wiznet.io/forum/12861/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "kslam1980"
created: "2018-04-18T00:00:51+09:00"
last_activity: "2018-05-17T04:02:13+09:00"
language: "en"
views: 889
replies: 3
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# 1-to-many connection

## Question

Asked by kslam1980 on 2018-04-18 in Serial-to-Ethernet & ConfigTool.

Is the WIZ107SR module able to support 1-to-many connection? For example:

- WIZ107SR acts as a TCP client, and communicate with multiple TCP servers.

- WIZ107SR acts as a TCP server, and communicate with multiple TCP clients.

## Replies

### Reply 1 by rena, 2018-05-14

Hi, [@kslam1980](https://maker.wiznet.io/u/kslam1980).
I’m sorry for the late reply.

For the S2E module, only support 1:1 connection. (all operation mode)

If you need to communicate with other modules in ‘CONNECT’ state,
you must disconnect the previous connection and communicate.

### Reply 2 by kslam1980, 2018-05-15 (in reply to reply 1)

Hi Rena,

Is there any available modules that is able to support 1:many connection, with serial interface communicate with the host processor?

Thanks & Regards,

KS Lam

![](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/f/f464dd1c7c382c015b3fc53eebe1cd1aadffee61.jpg)

### Reply 3 by rena, 2018-05-17

Hi,

There are multi-port S2E modules.

2 port S2E modules:

- WIZ752SR-120 (compatible with WIZ120SR S2E module)

- WIZ752SR-125 (compatible with WIZ125SR S2E module)

4 port S2E modules:

- WIZ140SR

- WIZ145SR

Please refer to below links:

- [WIZnet S2E products](http://www.wiznet.io/product/serial-to-ethernet/)

- [WIZwiki S2E page](http://wizwiki.net/wiki/doku.php?id=products:s2e_module:start)

---

Source: https://maker.wiznet.io/forum/12861