Bob, you don't know what you are talking about. The SB4100 I was using worked fine for a couple of years with several different routers. It only stopped working after a lighting storm. You may be slightly correct in thinking that the NICs in my PCs are better at handling poor signal levels while the routers could not. However, I *am* blaming the correct source of the problem, as the cable modem was the only thing that changed such that it no longer performed as well as before.
Alan