Probably not the root of your issue but when I got a new Cat5 cable from bestronics, the sleeve around the RJ45 plug was a wee bit long and kept it from seating correctly. As a result, my MFC wasn't powering up. Pulling the sleeve back a millimeter or so did the trick so the plug would seat completely. Of course now I run an ethercon cable from my rack to the floorboard.Just got another cat 5e cable, this one fits perfect and snaps in both the axe and MFC,? Still nothing...