If you are using the CD-ROM, the process is relatively automated:
Drivers and Software updates for UP-X898MD | Sony USA. Sony SupportMedical Printers. Printer Driver - Sony sony up-x898md driver
If the driver is not working, consider these steps, which are often discussed in medical technology forums. If you are using the CD-ROM, the process
This usually points to a Windows driver signature enforcement block. Uninstall the failed driver. Restart your PC in "Disable Driver Signature Enforcement" mode, and then rerun the Sony driver installer as an administrator. Problem 3: Blurred or Stretched Prints If you are using the CD-ROM
Comprehensive Guide to Downloading and Installing Sony UP-X898MD Drivers