We have got a problem, after /system/routerboard upgrade firmware a RB4011wifi version has died suddenly. Only serial netinstall helped to relive it.
Routeros version v6.45.8 long-term
Is an isolate case or a bug?
Yes, it is an option, but increase the price with ~20%.You can always use
RJ45 SFP 10/100/1000M copper module
Can you tell us how do you make limitation to users? Simple-queue on AP? PPPoE?What about limiting users? Do you have default queue types?