# Serial Port Viewer

## Prerequisite:

The iSG system firmware version must be 20124 or higher.

You can refer to this guide for upgrading the iSG version: [iSG Firmware Updates](https://kb.linknlink.com/isg/settings/firmware-updates/isg-software).

## Instructions for Use:

1）Turn on the iSG, and in the left navigation bar of the iSG, find "Add-Ons" → "Serial Port Viewer". Here, you can view the serial port information connected to the iSG's USB port. 

<figure><img src="https://1561436000-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FpCtFemS511EXKjNnjKqg%2Fuploads%2FEXYObZH9FkuCSN9WtrIq%2F%E4%BC%81%E4%B8%9A%E5%BE%AE%E4%BF%A1%E6%88%AA%E5%9B%BE_20241014171024.png?alt=media&#x26;token=e8a8cd9e-e012-4c9a-89e5-02859f9ff403" alt=""><figcaption></figcaption></figure>

2）For example, when we plug a Z-Wave dongle into the USB port on the side of the iSG, clicking here will show us the automatically detected serial port information:

<figure><img src="https://1561436000-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FpCtFemS511EXKjNnjKqg%2Fuploads%2F6Ahk4mfTJM9hfRvPrIav%2F%E4%BC%81%E4%B8%9A%E5%BE%AE%E4%BF%A1%E6%88%AA%E5%9B%BE_20241014171909.png?alt=media&#x26;token=53259e6c-2da1-4d08-a7a3-0f47e6db1bfa" alt=""><figcaption></figcaption></figure>

<mark style="color:red;">**Note：**</mark> If you plug in the USB dongle, no information is displayed in the details page on the right. You need to click on any other Add-on, and then click on the Serial Port Viewer Add-on, and the USB dongle information will be displayed. If still not, please contact us via [discord channel](https://discord.gg/bYnDNdMsnS)