Because this device was manufactured long before the release of Windows 10, it falls into the category of "legacy hardware." Manufacturers often stop supporting older devices to encourage consumers to upgrade to newer models. This is the root cause of the driver availability issue.
If you visit the official Logitech Support website and search for V-UBK45, you will likely find drivers for Windows 7, Windows Vista, and Windows XP, but nothing explicitly labeled for Windows 10. v-ubk45 driver windows 10
If your V-UBK45 contains a PL-2303 HXA (Rev A) chip, the latest Prolific driver (v3.8.xx or higher) will deliberately refuse to work. You must use a specific older driver version. Because this device was manufactured long before the
Where x is a number like COM3, COM4, etc. This COM port is now ready for use with serial terminal software (PuTTY, Arduino IDE, etc.). If your V-UBK45 contains a PL-2303 HXA (Rev