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4D PAY/Stax - Terminal Setup

2 min. readlast update: 08.03.2026

Merchant Account Setup Required

4D PAY - Powered by Stax requires a merchant credit card processing account with Stax Payments.  For information about establishing a merchant account with Stax, please  click this link: 4D PAY - Powered by Stax

The Stax onboarding team will notify practices of underwriting approval via email. Once approved, Stax will complete account activation and configure and ship the credit card terminals (typically within five business days)

For underwriting status, activation updates, or terminal‑shipping inquiries, contact Stax Merchant Support at (855) 550‑3288.

Terminal Setup/Connect to 4D EMR

1.     Log in to 4D EMR.
2.     Navigate to Practice → Settings → Integrations.
3.     Select the 4D PAY – Powered by Stax tile.

 

 

 

 

The Public Key and API Key should display unique values per practice as shown below.

Click on the "Update List" button.  All terminals provided by Stax should be listed.

If the keys or terminal list are blank, contact 4D EMR Support at 844‑878‑2434 or support@4d-emr.com.

 

 

 

 

 

 

 

 

 

 

 

 

4D PAY - Powered by Stax currently uses Dejavoo QD4 Terminals.

Connect to Network/Internet

Wired Connection

  1. Connect an Ethernet cable to the terminal and to your modem or router.
  2. Plug in and power on the terminal.

Wi‑Fi Connection

  1. Plug in and power on the terminal.
  2. Tap the top‑right corner of the screen and swipe down to open the quick menu.
    (Alternatively: Settings → WLAN)
  3. Select the Wi‑Fi icon.
  4. Allow available networks to load.
  5. Select your network.
  6. Enter your Wi‑Fi password.
  7. Tap Connect.

Test the Terminal Setup

  1. On the terminal, open the Aura app tile to load the point‑of‑sale interface.

  1. In 4D EMR, select a test or Guest patient.
  2. Go to the Money tab, add a test charge to the Shopping Cart, and click Checkout.
  3. On the Checkout screen, select the 4D PAY tile and click Complete Sale.

  1. Choose Swipe/Insert Card.

  1. Select the terminal you wish to test and click Send to Terminal.  The transaction amount will be sent to the terminal and the patient will be prompted to complete processing.

  1. To cancel the transaction, simply click the "x" at the top right of the processing window. 

NOTE:  Do not "Refresh" the webpage while waiting for the transaction to complete.

For addtional Stax Dejavoo Terminal information, please see below links:

Tutorials: Dejavoo QD Series Terminals

Dejavoo QD Series Quick Reference Guide

 

 

 

 

 

 

 

 

 

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