On Sep 28, 2005, at 7:11 AM, Wouter van Ooijen wrote: > USB specialists around: what *is* important here? > - OS > - driver > - usb/serial hardware > > anything else? > USB/serial hardware firmware version. I don't even know if this is accessible, but it might be an issue in some cases... BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist