>>>> On Mon, Mar 3, 2014 at 2:17 AM, Xiaofan Chen <xiaof...@gmail.com> wrote:
>>>>> Usually that means your device does not have a unique serial number.
>>>>> If the device has a unique serial number, Windows will not need to
>>>>> re-install the driver for your device.
This problem also occurs in locked down retail Point of Sale (cash-registers).
Example: The barcode scanner is dead, the clerk swaps the barcode scanner.
You don’t want “Please insert driver Disk” to appear.
Many scanners have a configuration option to enable/disable the SN.
========
That said, reason for having SNs associated with a specific device.
This lets you specify Driver (Version X) that only works with Device Version
(OLD)
And Driver Version Y works with device version (NEW)
-Duane.
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