Sometimes the driver installs successfully, but the software cannot communicate with the hardware because the port number is wrong.
If your device is a generic USB-to-Serial adapter or an industrial cable, it likely uses the FTDI chipset. The "1711" sometimes appears in specific configurations of these chips.
If automatic installation fails, use the "Have Disk" option in Device Manager to explicitly select the .inf file provided in the driver download. com lpt 1711 driver download top
Change the COM or LPT port number to match the requirements of your specific software. Enable Legacy Support in BIOS/UEFI
If the ports are not listed in Device Manager, downloading the latest Intel Serial IO or chipset drivers from your PC manufacturer's site (such as Lenovo or Dell ) can often restore missing COM/LPT functionality. How to Install and Fix Missing COM/LPT Ports Sometimes the driver installs successfully, but the software
The query typically refers to search intent for drivers related to COM (Serial) and LPT (Parallel) ports on a computer system, often associated with specific hardware like thermal printers or legacy expansion cards. Most Common Drivers for "COM/LPT" Devices
: Use parallel communication, sending multiple data bits simultaneously, widely used for vintage dot-matrix printers. If automatic installation fails, use the "Have Disk"
After the installation finishes, restart your computer to ensure the driver is active. Installing/Fixing COM Port Drivers (Windows 10/11) If the port does not appear:
With this guide, you should now be able to revive your legacy parallel and serial devices on modern Windows. Remember: legacy hardware is not dead – it just needs the right driver.