---
title: "WIZ750SR-110 power jack specification"
url: "https://maker.wiznet.io/forum/15851"
markdown_url: "https://maker.wiznet.io/forum/15851/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "alebeda"
created: "2025-08-25T23:53:19+09:00"
last_activity: "2025-08-27T13:28:32+09:00"
language: "en"
views: 6
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# WIZ750SR-110 power jack specification

## Question

Asked by alebeda on 2025-08-25 in Serial-to-Ethernet & ConfigTool.

I just bought some units of WIZ750SR-110, and now I need to buy the power supply. However in the specification document it is specified only that it is a 5V jack, but no dimensions of the jack or polarity (positive pole is inside or outside)? Does anyone can provide me this info? Thanks

## Replies

### Reply 1 by Alan, 2025-08-27

The inside is the positive pole and the outside is the negative pole.
This is a DC jack commonly used.
For more details, please check our website.

We would like to assist you more closely with your situation.
We can recommend everything tailored to your project.

For more details, please kindly contact us at the following email:
**Alan@wiznet.io**

---

Source: https://maker.wiznet.io/forum/15851