--- In l..., Xiaofan Chen wrote:
>
> On Mon, Feb 14, 2011 at 9:06 AM, boB G wrote:
>
> > Now I am seeing that on...
> >
> > http://msdn.microsoft.com/en-us/library/ff538820.aspx
> >
> > That the CDC class driver for Vista, server 2008 and Windows 7 is Usb8023.sys
>
> That one is for different CDC sub-class. There are many sub-classes
> within the CDC class.
>
> > That is different than usbser.sys for xp that I use.
>
> usbser.sys is for CDC-ACM. It is in Win2k/XP/Vista/7.
Hey ! Maybe it is as simple as the same usbser.sys from XP will
not work for vista and win 7 !!

Maybe that's been the problem all along.

Haven't tried usbser.sys from the win 7 disk itself yet !

Thx for the ideas !

boB

It is
> actually available for Win98SE/ME as well. But there are
> quite some problems associated with the driver so that
> USB to Serial Converter IC vendors like FTDI/Prolific/Silabs
> do not use CDC-ACM class but use a custom class
> and develop their own drivers.
>
>
> --
> Xiaofan
>

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