---
title: How to Install a 3320g Barcode Scanner
description: Please follow these steps if you are installing a 3320 barcode scanner to your existing unit.
---

[Skip to content](https://support.patronscan.com/how-to-install-a-3320#main-content)

English

Show submenu for translations

![Patronscan Logo Horizontal](https://support.patronscan.com/hs-fs/hubfs/Patronscan%20Logo%20Dec%202025%20BambooHR.png?width=350&height=54&name=Patronscan%20Logo%20Dec%202025%20BambooHR.png)

Open main navigation

Close main navigation

- English
  
  Show submenu for translations
- Go to patronscan.com

 Go to patronscan.com

 Hello. How can we help you?

- There are no suggestions because the search field is empty.

1. [Patronscan Support Articles](https://support.patronscan.com/?hsLang=en)
2. [Troubleshooting](https://support.patronscan.com/troubleshooting?hsLang=en)
3. [Repair](https://support.patronscan.com/troubleshooting?hsLang=en#repair)

# How to Install a 3320g Barcode Scanner

## Please follow these steps if you are installing a 3320 barcode scanner to your existing unit.

1. **Remove the Back Panel:**
   
     - Begin by locating the 4 screws securing the back panel of the unit.
     - Use a screwdriver to carefully remove the screws and take off the back panel.
2. **Connect the USB Cable:**
   
     - Plug the USB cable from the barcode scanner into the USB hub located behind the back panel.
3. **Activate the Barcode Scanner:**
   
     - If the unit is turned on, the barcode scanner will begin emitting light, indicating it is powered and ready for use.
4. **Position the Barcode Scanner:**
   
     - Peel off the double-sided tape.
     - Align the barcode scanner to the opening on the left side, located beneath the tablet. Ensure that the scanner’s light is visible through the opening.
5. **Attach the Barcode Scanner:**
   
     - Once aligned correctly, use the double-sided tape to securely attach the barcode scanner in place.
6. **Reassemble the Back Panel:**
   
     - Carefully reposition the back panel and secure it by screwing the 4 screws back into place.

Your barcode scanner is now installed and ready to use!

- [FAQs](https://support.patronscan.com/faqs?hsLang=en#main-content)

    - [Guard](https://support.patronscan.com/faqs?hsLang=en#guard)
    - [Handheld Scanner](https://support.patronscan.com/faqs?hsLang=en#handheld-scanner)
    - [Web Admin Portal](https://support.patronscan.com/faqs?hsLang=en#web-admin-portal)
    - [DualPass](https://support.patronscan.com/faqs?hsLang=en#dualpass)
    - [Privacy](https://support.patronscan.com/faqs?hsLang=en#privacy)
- [Getting started](https://support.patronscan.com/getting-started?hsLang=en#main-content)

    - [DualPass](https://support.patronscan.com/getting-started?hsLang=en#dualpass)
    - [Guard +](https://support.patronscan.com/getting-started?hsLang=en#guard)
    - [AVA Camera](https://support.patronscan.com/getting-started?hsLang=en#ava-camera)
    - [HandHeld](https://support.patronscan.com/getting-started?hsLang=en#handheld)
    - [Admin Portal](https://support.patronscan.com/getting-started?hsLang=en#admin-portal)
- [Troubleshooting](https://support.patronscan.com/troubleshooting?hsLang=en#main-content)

    - [Patronscan APP](https://support.patronscan.com/troubleshooting?hsLang=en#patronscan-app)
    - [Repair](https://support.patronscan.com/troubleshooting?hsLang=en#repair)
    - [Guard](https://support.patronscan.com/troubleshooting?hsLang=en#guard)
    - [Kiosk](https://support.patronscan.com/troubleshooting?hsLang=en#kiosk)
- [Product Updates](https://support.patronscan.com/product-updates?hsLang=en)

[![Patronscan Logo Horizontal](https://support.patronscan.com/hs-fs/hubfs/Patronscan%20Logo%20Dec%202025%20BambooHR.png?width=250&height=39&name=Patronscan%20Logo%20Dec%202025%20BambooHR.png "Patronscan Logo Horizontal")](http://www.patronscan.com?hsLang=en)

Copyright © 2026, Patronscan