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???
10/07/10 22:46
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Msg Score: +2
 +2 Good Answer/Helpful
#178982 - Serial number
Responding to: ???'s previous message
If the unit identifies itself with a serial number, you may move the adapter between the USB interfaces while keeping the same device name.

If the unit doesn't identify itself with a serial number, then Windows will use one device name for each USB port that you connect a chip with that same vendor/device IDs.

So a chip that has a nice EEPROM for storing venddir + device + serial number is more likelly to behave well, than a chip that requires an external EEPROM to be added.

Anyone selling a USB-to-serial adapter without a serial number should be banned. This world should have a site with blacklists - not only of the manufacturer, but of the distributors who push the crap. It's totally unacceptable to distribute such crap.

List of 21 messages in thread
TopicAuthorDate
Serial port, serial to USB and framing/voltage issues            01/01/70 00:00      
   "proper connection"?            01/01/70 00:00      
   PIC versus SiLabs C8051            01/01/70 00:00      
      Sign of a cheap & nasty adaptor            01/01/70 00:00      
         the moral of the story            01/01/70 00:00      
            FTDI (equipped)            01/01/70 00:00      
               Serial number            01/01/70 00:00      
   Why do you say, "framing/voltage issues" ?            01/01/70 00:00      
      Framing/voltage issues            01/01/70 00:00      
         fundamentals etc = "bible time"            01/01/70 00:00      
            How UARTs work            01/01/70 00:00      
               fundamentals            01/01/70 00:00      
                  Baud rate errors            01/01/70 00:00      
                     Thanks            01/01/70 00:00      
                     Thanks            01/01/70 00:00      
   Store data to 8051 from Serial port            01/01/70 00:00      
      why not?            01/01/70 00:00      
         help with code            01/01/70 00:00      
            you can get all the help you need ...            01/01/70 00:00      
               thanks            01/01/70 00:00      
   Check this settting also...            01/01/70 00:00      

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