This issue is caused by the installation of an incorrect driver by Windows when it 'searches the internet for a driver.' The correct driver version for the USB to Serial Adapter is: If you still have a problem, you may try this procedure to revert to a previously known working driver. NOTE: This issue has been resolved by Prolific. Also, the PL2303 Driver Manual will provide more information about compatibility of chip versions with Windows OS Versions, including a comprehensive comparison chart. You can DOWNLOAD THIS UTILITY from Prolific to identify your chip. IMPORTANT: Driver version 3.8.12 does not support older Prolific chip versions on Windows 10 (and 8/8.1). Windows Update should install this version going forward. As of March 2017, after ongoing communication with the engineers at Prolific, the issue may be remedied with Driver VER-3.8.12.0 and higher. The output of modinfo pl2303 is: filename: /lib/modules/user/kernel/drivers/usb/serial/pl2303.UPDATE: This issue is caused by the USB to Serial Comm Port Driver. usb 1-4: pl2303 converter now attached to ttyUSB0 usbserial: USB Serial support registered for pl2303 usbcore: registered new interface driver pl2303 usbserial: USB Serial support registered for generic usbcore: registered new interface driver usbserial_generic usbcore: registered new interface driver usbserial usb 1-4: Manufacturer: Prolific Technology Inc. usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-4: New USB device found, idVendor=067b, idProduct=2303

The new entries of the output of dmesg after plugging in the device are usb 1-4: new full-speed USB device number 2 using xhci_hcd When I run lsusb in the command line I see that there is a new entry after plugging in the said deviceīus 003 Device 002: ID 067b:2303 Prolific Technology, Inc. I have no idea how could I make the reader running in Linux (OpenSuse). When I plug the reader into USB port then it is not recognized by the system and the red LED in it keeps on glowing (as opposed to the situation when it is running properly and the LED is only glowing and blinking for some time and then fades away).

Prolific pl2303 drivers