: Plug in the USB or Serial cable. If using USB, ensure the DIP switches on the back are in the correct "On-line" mode (usually both switches down).
Ensure the green light is steady. If it’s flashing, check the paper roll. ncr 7197 driver
Open the driver executable (e.g., NCR_7197_Setup.exe ). Select Port: Choose the correct COM port or USB interface. : Plug in the USB or Serial cable