I think it's actually more of a Windows thing than a vendor-specific thing.

On FTDI chips without an external EEPROM attached, I've had no need to
reinstall drivers - they seem to default to the same serial number. Of
course, the newer chips (FT245R and FT232R) have the EEPROM and serial
number built in.

-Randy

On 8/16/07, William Couture <bcouture@gmail.com> wrote:
> I keep running into the same problem whenever I use someone's
> USB to serial converter:
>
> All chips, even "identical" chips from same manufactuer / lot,
> have a unique *SERIAL NUMBER*.
>
> All the drivers check for *SERIAL NUMBER* as well as USB CID.
>
> If it sees a different *SERIAL NUMBER*, it insists on installing yet
> another driver for the "new hardware".
>
> So, if you ever need to use a different "identical" piece of hardware,
> drivers must be installed.
>
> If the driver installation messes up, that particular piece of "identical"
> hardware can *NEVER* be used on that system, because of the bad
> driver (the "driver remove" option never seems to work...)
>
> And, if you need to test, say 100 (or 1000...) pieces before they leave
> the factory, *YOU NEED TO INSTALL THE DRIVER FOR EVERY UNIT
> YOU TEST*
>
> Does anyone know who makes USB to serial chips without this
> stupidity?
>
> Bill
>
> --
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-- 
-Randy Glenn
Computer Eng. and Mgt. Year V, McMaster University
Regional Student Representative, IEEE Canada

randy.glenn-at-gmail.com - glennrb-at-mcmaster.ca
randy.glenn-at-computer.org - randy_glenn-at-ieee.org
http://www.randyglenn.ca
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