4 ms·At least 100% common for wifi routers? Not sure why all wifi routers have one though.by mmis1000 5y agoAt least 100% common for wifi routers? Not sure why all wifi routers have one though.beerandt 5y agoEven most of these are software controlled. You can usually change what the button does with ddwrt or similar.mmis1000 5y agoAs long as the software is coded to trigger reset only on that signal, it probably didn't matter.