NOTE FOR MODERATORS: Please, delete post between 5-29 march 2006(this post are useless and slows the access to this topic) FINALLY I HAVE THE SOLUTION

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Yesterday, i came back the os of my pb3400 to os8.6 (clean install) and THE STUPID USB SUPPORT CONTINUES

The problem (extracted from a readme of usb ddk)is a missing resource(usbx and id=1984) what blocks the usb functionality(this explains why my usb card is detected but doesnt work) The easiest way for edit this is using resedit. just open usb support extension on resedit and create a usbx resource, else edit this resource(i dont remember this step) and change his ID to 1984. Save changes, put the usb support in extensions folder(if is not present) and restart the computer. PROBLEM SOLVED