YES NOPE9 wrote: > The cloud reports that the RBPI boards were built with an RJ-45 connector= that was missing the integral magnetic noise suppression. > > #1 What kind of noise problems does this create ? > =20 It's worse than just noise problems, the transformers also ensure that=20 the common mode voltages are right and provide a path for any DC bias=20 currents. The transformers are also usually center tapped which in turn=20 means the pinout will almost certainly be different from a regular jack. Bottom line is without the correct magnetics the ethernet link almost=20 certainly won't work at all. > #2 Is there any kind of fix other than to replace the RJ-45s. Maybe som= e external part ? > =20 You could probablly run a short cable to a seperate board with the=20 magnetics on if you wanted. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .