Set Up the PAX A6630 With Commerce Engine

Description: Learn how to unbox, activate, and connect your PAX A6630 to the Shift4 platform using Commerce Engine.

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The PAX A6630 is a compact, lightweight handheld payment device with a 6.5-inch touchscreen, support for tap, insert, and swipe transactions, and no integrated printer. It runs Commerce Engine and connects to the Shift4 platform over Wi-Fi or cellular.

Unbox the Device

1. Check the shipping box for signs of tampering.
2. Confirm the following items are present:
   • One PAX A6630 payment device
   • One USB-C charging cable
   • One power adapter
3. Inspect the device for physical tampering. Check the card slot and magnetic swipe reader for foreign objects.

Warning: If any inspection fails, contact Shift4 Support immediately and do not proceed with setup.

Charge the Device

1. Connect the USB-C charging cable to the device.
2. Connect the other end to the power adapter and plug it into a wall outlet.

Power On the Device

Press and hold the power button to start the device. Commerce Engine launches automatically.

 Note: If the device does not power on, visit the Device Will Not Power On article.

Activate the Device

 Note: Before starting activation, confirm the device is charged to at least 50% and that you have either Wi-Fi credentials or a SIM card ready.

Commerce Engine will guide you through language selection, network setup, and software download. This process takes approximately 15–20 minutes and may include automatic reboots. When activation completes, the device displays the black Shift4 idle screen and is ready to accept payment requests.

For the full activation walkthrough, visit the Set up Commerce Engine Devices article.

Connect to Your POS

How the A6630 connects to your POS depends on your integration type.

• On-premise: Your POS sends payment requests directly to the device's IP address. Use port 8085 for S4 REST or port 8084 for OPI. The device must have a static IP address.
• On-device: The POS application runs directly on the device alongside Commerce Engine. Payment requests are routed locally without requiring a network connection between the POS and the terminal.
• Cloud: Your POS sends requests to the Shift4 Cloud rather than directly to the device. Confirm that your POS application includes the correct device parameters in each request — specifically device.manufacturer and device.serialNumber — and that it can reach the Shift4 Cloud endpoint. No static IP is required.

Consult your POS vendor's documentation for specific connection steps.

For day-to-day device operations, visit the Use the PAX A6630 with Commerce Engine article.