How to Make Your LPT-to-USB Work
You can use an LPT-to-USB cable to connect your LPT printer to a USB port on your computer, at which point your computer will install a driver for the cable. Once the driver is installed, the LPT printer and your computer will be able to communicate with one another to print on the LPT printer. This cable is useful for a new computer that does not have an LPT port.
Instructions
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Turn on your LPT printer. Connect the LPT cable from your printer to the LPT end of the LPT-to-USB cable.
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Connect the USB end of the cable to a USB port on your computer. Wait for Windows to install the driver for the cable. This driver is included as part of your Windows 7 installation, so Windows will not require any information from you to install the device.
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Insert the installation disc for your printer into the computer's optical drive. Click the "Run Setup.exe" option, then follow the prompts to install the printer. If you do not have the installation disc for the printer, you will need to go to the printer manufacturer's website and download the installation files.
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Tips & Warnings
If you are using the cable to switch from an LPT port to a USB port on the same computer, you will need to change the port for the installed printer. Click "Start," then click "Devices and Printers." Right-click your printer's icon. Click "Printer Properties," then click the "Ports" tab. Click the USB port option. Click "Apply," then click "OK."
LPT-to-USB cables are often referred to as "Parallel-to-USB" cables as well.