Software outputs directly to port USB001, NOT to 'Printer A'. Windows now says 'Printer A' is on USB003 instead of its original USB001. If the printer was moved to a different physical USB port, this would generate a new identifier in Windows It is likely that whatever you are printing FROM is manually set to print to a specific USB port identifier, instead of a Windows Printer. Do not rely on Windows to provide a CORRECT driver.įor label and receipt printers like Zebra and Epson especially. What you should have done was fully remove the printer driver WHILE the printer was attached, and then reinstalled the printer driver cleanly.įor usb printers, if you can find a downloadable driver use it. The Prolific chipset is entirely unrelated to your USB printer. It will not show up in the device manager if the Serial Port is disabled in the bios. 3 drivers are found for ‘Prolific USB-to-Serial Comm Port (COM3)’. Windows 2000, Windows XP, Windows Vista, Windows 7, Windows 8: Download Drivers Installer: Prolific USB-to-Serial Comm Port (COM3): Drivers List. It has an internal PL2303 conversion chip that runs your serial port off the USB bus. Product: Prolific USB-to-Serial Comm Port (COM4). The PL2303 your're bringing up is the SERIAL port on your pc.
