If the manufacturer's site is down, sites like or MajorGeeks may have the driver. Always scan downloaded .exe or .zip files with Windows Defender or Malwarebytes before running them.
Sometimes a failed print job using the "Generic" driver can block the new driver from functioning. Clear all pending jobs in your system settings. es-9910ub driver download
Search for the 4BarLabel or 4Barcode app in the Apple App Store to print via Bluetooth. Troubleshooting Common Issues If the manufacturer's site is down, sites like