If you cannot find a Bluetooth device named “PrinterServer” or a device starting with “SW” or “WB” on your computer, please try the following steps:
As long as the print server is successfully connected to the computer via Bluetooth, you can ignore the “Driver is unavailable” notification, as it has no impact on Bluetooth printing.
If the Bluetooth networking COM number of the print server (e.g., COM9) is not listed in your printer’s Ports settings, you can add it manually. Follow these steps: