to:Xiaofan
Xiofan, your information is excellent.  I feel I must use the USB CDC-ACM c=
lass because of my requirement to support legacy apps that use the serial p=
ort.

Are you saying that Windows has buggy support for the CDC-ACM class and tha=
t all slave USB devices using CDC-ACM have the same problems ?  Or do some =
USB slave devices deal with the Windows CDC-ACM bugs better than others?   =
How about FTDI.... do their products work well with the Windows CDC-ACM imp=
lementation ?
Does good inter-operability vary by slave device ?

Best
Gus in Denver   99gus
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