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To know complete procedure for installation of Virtual Card and printing from Dos to Usb Printer Click Here
Some softwares provide printing on LPT-1 and in new computers LPT port is not available. USB port is generally used for Laser Printer or Inkjet Printer. Out of two, one solution is that addition of extra port in computer and second is through settings in computer. Through setting there is no need of Lan Card in computer. A virtual card installation is required in the computer.
To know complete procedure for installation of Virtual Card and printing from Dos to Usb Printer Click Here