This driver is only compatible with Windows 2000 or XP. There is no later version.

Applies to W300 and W600 DT/TT (Direct Thermal / Thermal Transfer) printers.

https://dl.waspbarcode.com/kb/printer/Wasp_W300-600_Printer_Drivers.zip

Download this file and extract it to a folder on your PC.  Run the Windows Add Printer wizard from your list of printers.  Use the Have Disc option and point to the directory where you extracted this ZIP file.