[Elecraft] K3 Window 8.1 serial port issue

[Don Wilhelm]

Tom,

If you can, try using an adapter with the FTDI chipset.  Many of the 
Prolific USB to serial adapters do not work well, particularly at the 
lower 4800 baud rate of the K2 (the K3 is usually OK).  After having 
some problems with the Prolific chipset adapters that Elecraft began 
selling, they had switched to adapters with the FTDI chipset.

If you are not using one of the early USB to serial adapters sold by 
Elecraft, take note of the information below:
Be aware that there were several counterfeit Prolific chipsets (and FTDI 
too), and the manufacturer of the real ones put detection code in the 
drivers so the counterfeit ones would not work.  I don't know if that is 
your problem or not, but the error you stated indicates a problem with 
the adapter and the computer - likely driver issues.

73,
Don W3FPR

On 4/17/2015 8:19 PM, cx7tt at 4email.net wrote:
> Hola,
>
> Trying to update my K3 software prior to setting up my remote capability.
>
> New computer with OS Win 8.1....I plugged the Prolific cable between
> RS232 on K2 and USB port on PC.  Found the port via control panel,
> device manager and the PC recognizes that it is a Prolific device and
> even updated the driver software. However, it states, "This device
> cannot start" (Code 10) and "A device which does not exist was specified".
>
> I disabled and then enabled but still no luck. Any ideas?
>
> Gracias
> Tom
> HP/CX7TT
>