If you are currently using a VX520 along with one of Forte’s solutions (Forte Checkout or Secure Web Pay) or using it with a custom application (Web, Desktop, or Native), you can migrate to the new V400C Plus, with a few simple and easy steps.

1. Unbox the terminal.
2. Uninstall the VFI USB Driver 2.1.0.1_b2 or the older version of the Verifone Unified driver:
   1. Click the Windows icon in the lower left corner.
   2. Type in “Apps” to search for Apps and Features.
   3. Click on the Apps and Features item at the top of the pop-up window.
   4. If you have an entry for either VerifoneUnifiedDriver or VFI USB Driver, select it and then click the Uninstall button.
   5. Click the Uninstall button.
   6. Click the Yes button.
3. Which type of application are you using?
   1. Forte Checkout and Secure Web Pay:
      1. Install the Verifone Windows Setup file.
   2. Custom Web Applications:
      1. Install the Verifone Windows Setup file.
      2. Refer to your software provider for any additional instructions.
   3. Desktop Applications:
      1. Install the Verifone Unified Driver
   4. Native Applications:
      1. Install the Verifone Unified Driver
      2. Refer to your software provider for any additional instructions.
4. Check if the VerifoneUnifiedDriverInstaller is installed correctly:
   1. Click the Windows icon (“Start” button) in the lower left corner.
   2. Type in “Apps” to search for Apps and Features.
   3. Click on the Apps and Features item at the top of the pop-up window.
   4. Find the entry for VerifoneUnifiedDriverInstaller.
5. Attach the V400c to the host computer:
   1. Make sure your adapter is connected to miniUSB cable provided with your terminal.
   2. Attach the USB end of the cables to your host computer.
   3. Attach the RS232 end (thick phone-like/ethernet connecter-like end) into the terminal next to the arrows.