Action required before September 1, 2026.

The Verifone P400+ is reaching end of support. After September 1, 2026, you will no longer be able to accept payments on your P400+ terminal. Replace it with the Smart Terminal V2 (S700) to avoid any disruption at checkout. For next steps, refer to the P400+ upgrade email sent to your account or contact Retail Support.

In the box

• 1 power cable
• 1 Verifone P400+ terminal
• 1 adapter cable
• 1 Ethernet cable

Setting up the terminal

To set up the terminal:

1. Open the back of the terminal by sliding the tab up and pulling away.
2. Plug the adapter cable into the back of the terminal.
3. Replace the tab.
4. Plug the power cable into the electrical port on the adapter cable.
5. Plug your Ethernet cable into the port on the adapter cable labeled ETH. Only a wired internet connection is supported for the P400+ terminal.
6. Plug the other end of the power cable into a power source.

The terminal will boot up immediately. There is no power switch. If the terminal is plugged in, it is on.

Pairing the terminal

Once the terminal has finished booting up, you’ll need to pair it with Retail POS.

• Pairing the terminal on a computer

  1. In Retail POS, navigate to Settings > Payment processing.
  2. Click + Add terminal.
  3. Enter a descriptive Terminal name.
  4. From the Terminal model dropdown, select Verifone P400 Plus.
  5. On the terminal’s PIN pad, enter 07139. This will display an activation code.

  6. Enter the activation code exactly as it appears on the terminal’s screen (including the hyphens).

     

  7. Click Add.
  8. The terminal will return to the default screen. You are now ready to accept card payments.
  9. (Optional) Confirm the connection between Retail POS and your payment terminal by clicking Test connection.

• Pairing the terminal on iPad

  1. On the profile screen, tap Payment terminal.

     

  2. Tap Add a payment terminal.
  3. Enter a Name for the terminal. This can be whatever you like (ex: Main Register, Service Counter, etc.).
  4. Tap Add.
  5. Generate an activation code for the terminal by entering 07139 on the terminal’s PIN pad. The activation code will appear on the terminal’s screen.

  6. Enter the activation code exactly as it appears on the terminal, including hyphens (dashes).

     

  7. Tap Done.
  8. The app will confirm that the payment terminal has been successfully paired. Tap Done.
  9. The terminal’s name and status will be displayed. Tap Done.

  The terminal’s name and status will now be visible on the profile screen.

Disconnecting the terminal

If you ever need to disconnect the terminal from your account:

• Disconnecting the terminal on a computer

  1. In Retail POS, navigate to Settings > Payment processing.

  2. Click the trash icon (Delete) beside the name of the terminal you want to unpair.

     

  3. Click Unpair.

  The terminal will no longer be associated with your account.

• Disconnecting the terminal on iPad

  1. On the profile screen, tap the payment terminal.
  2. Tap the Information button next to the terminal’s name.

  3. Tap Delete.

     

  4. Confirm the removal of the terminal by tapping Delete.
  5. Tap Done.

  The terminal will no longer be associated with your account.

Troubleshooting the Verifone P400+

The following conditions must be met for the P400+ to operate:

• Navigate to Settings > Locations, click Customize beside the correct location, then click Credit card and verify that Lightspeed Payments is set as the payment gateway.
• Navigate to Settings > Payment processing and verify that the terminal is displayed with the Paired status.
• If you have multiple P400+ terminals, verify that the correct terminal is selected before processing the payment.
• If you have multiple networks, verify that both the P400+ terminal and your computer or iPad are connected to the same network.

• For some users, a recent software update has caused the P400+ payment terminal to frequently disconnect from the Retail POS iPad app. While we work to resolve the issue, you can resolve connection instability by unpairing the terminal through the Manager interface, then re-pairing the terminal through the POS interface. You can find detailed instructions here.
• Unplugging the terminal from its power source and plugging it back in will reset the terminal. This resolves the problem in most cases. The terminal may update when restarted. Note that the update should never take more than 15 minutes. If it does, the terminal may have lost its connection to the internet during the update, or it may be frozen again. Try unplugging the terminal and plugging it back in again to resolve this.

• To verify that the terminal is able to connect to the internet, enter 08624 on the PIN pad. The terminal will run a network probe, after which the screen should display:

  • OK: Armada
  • OK Stripe

  Note the test results, then press the 0 (zero) key to exit the test.

  If the OK messages above don’t display, it means the terminal isn’t connected to the internet. After verifying that the Ethernet cable is still securely connected, you can check your computer’s firewall/blacklist settings or your router settings to try to find the source of the problem.

• Useful information about the terminal’s firmware version and network can be obtained by checking the device status. Doing so and taking a picture of the results can help Retail Support diagnose any issues you weren’t able to resolve on your own.

  To check the device status, enter 04268 on the PIN pad. The screen should display:

  • P400 Plus IP address (defaults to DHCP)
  • Account ID
  • Device software version
  • Location
  • Network gateway, DNS
  • Network mask
  • a MAC address or WLAN network name

  Take a picture of the results, then press the 0 (zero) key to exit the test.