Hello, as I said I let PC make all possible searches for the driver. I still obtain the same message. No driver found. If you read carefully the entire thread you see can I have asked to others which driver they use. Apparently winusb.sys is used but without the proper inf it can be associated with this unknown device.
Today I tried with an SD installed. No change. Still exclamation point.
Today I tried with an SD installed. No change. Still exclamation point.