If you are using Point of Sale (POS) software that requires a serial connection rather than a keyboard wedge, you will need the Virtual COM driver to map the USB device to a COM port.

: The default COM Port Latency Timer is set too high for legacy serial-to-USB emulation chips, dropping critical data packets.

If the scanner is behaving abnormally, restoring it to factory settings usually solves the problem.

Device Manager shows “Unknown USB Device (Device Descriptor Request Failed).” Fix: This is a hardware or USB port issue—not a missing driver. Try another cable, port, or PC. If persists, the scanner may be faulty.

Based on our comprehensive review, we recommend the Etop Miniscan Driver VS890 to:

Etop Miniscan Driver Vs890 -

If you are using Point of Sale (POS) software that requires a serial connection rather than a keyboard wedge, you will need the Virtual COM driver to map the USB device to a COM port.

: The default COM Port Latency Timer is set too high for legacy serial-to-USB emulation chips, dropping critical data packets.

If the scanner is behaving abnormally, restoring it to factory settings usually solves the problem.

Device Manager shows “Unknown USB Device (Device Descriptor Request Failed).” Fix: This is a hardware or USB port issue—not a missing driver. Try another cable, port, or PC. If persists, the scanner may be faulty.

Based on our comprehensive review, we recommend the Etop Miniscan Driver VS890 to:

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