Thanks Dick and Mark for your replies.
My cable was purchased from elecraft,
I will get an FDTI adaptor and see how that goes.

Chris
VK2ACD

On Mon, Jan 18, 2021 at 10:42 AM Dick Dievendorff <d...@elecraft.com> wrote:

> This is probably a message from a Windows USB driver install.  I don’t
> recall adding that text to the K3 Utility.
>
> Early KUSB cables used a chipset from a company named Prolofic.  Their
> brand fell on hard times, there were reportedly some counterfeits. Device
> driver support comes from the OS and device vendors, we use what’s there. I
> suspect Windows 10 no longer supports the Prolific chipset.
>
> We’ve moved on (some years ago, more than 10) to USB to serial adapters
> that use the FTDI chipset. I’d recommend moving to an adapter with an FTDI
> chipset. Elecraft’s KUSB is not the only USB to Serial adapter with the
> FTDI chipset, but it does have jack screws to hold the 9-pin connector to
> the back of the K3.
>
> The K3 Utility will use whatever driver the OS provides for the selected
> COM port.
>
> 73 de Dick, K6KR
>
> > On Jan 17, 2021, at 15:27, Chris Meagher <acdmeag...@gmail.com> wrote:
> >
> > Hi
> > I recently acquired a new shack laptop, Win 10 Home,
> > connected elecraft USB-RS232 cable to update firmware with the latest
> > utility.
> > But unsuccessful, got the message -
> > <PL2303HXA phased out since 2012, please contact your supplier>
> >
> > So I ended up doing it no problems with an older Win 7 laptop.
> > Does anyone have any experience with this or a solution?
> >
> > thanks
> > Chris    VK2ACD    K3/10 serial no. in the 600's
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