Plug the printer into a power source and connect the USB cable to your PC while the printer is turned off Run the Installer: Double-click the downloaded file. In the installation dialog, check the box for "THERMAL Receipt Printer" Port Selection: During setup, select the (often identified as Virtual Port
If the Realtek link is down or incompatible for your exact hardware revision (rare, but possible), try these backup methods:
If the executable installer does not recognize the printer, you can force Windows 7 to install the driver via the Device Manager.