Why there is not normal power connector ? what about another power source ? Is there anyone, in mikrotik company, who is talking with ISP about their wishes ? 
haha, there is a normal power connector inside the case. I wish it was externally available but the one good thing about it being like it is is that it canāt be accidentally unplugged.
I am still up in the air about it.
I know, i found it insideā¦but itĀ“s like joke, unfortunatelly - bad joke - this solution. That looks like first good soho router after few years and there are still basic mistakes 
Not clear why Mikrotik not followed good dual power connector design of RB450G.
You see it as a mistake. We like it for installs where we wall mount as stops power plug being pulled out.
Cant please everyone.
Haha 
we also use Poe not the āincludedā power supply. But this is nothing what screwdriver cant solve.