No serial convertor is going to be able to relay a 12Mbps data stream. And the convertor only responds to data addressed to it. The original poster wants to monitor a USB stream. Presumably that means all the setup and handshaking too. R Andre Abelian wrote: > Cliff, > > have you try USB to serial converters. They are like 30-40 $ > and there are lots of free rs232 software to capture data. > in between usb just add buffer like 7407. why pay $400 > > Andre > > > > > Cliff Brake wrote: > >> On 11/1/05, Digiled dot com wrote: >> >> >>> Hi PicListers, >>> anyone can suggest me an USB sniffer ? >>> >> >> >> I just bought the following product. Works well under Linux -- I >> assume it also works well under windows, but have not tried it. Great >> product for the price! >> >> http://www.totalphase.com/products/beagle/usb/ >> >> Cliff >> >> -- >> ======================= >> Cliff Brake >> http://bec-systems.com >> >> >> -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist