Maximum AC wifi link speed?

I've been searching for a while and i just cant seem to find the answer. I just upgraded from an AC 1200 to an AC 1900 router. My note 4's wifi link speed on the AC 1200 maxed out at 867 mb/s. on 5ghz which is the max for AC 1200.

Now with the new router it still only connects at 867mb/s and not the max link speed the new AC 1900 router should provide.

I know it dosent matter, has nothing to do with why i bought the router and is plenty fast enough... but it's bugging me.

I just want to know if the N4 tops out at 867mb/s? Has anyone gotten anything higher for a link speed?

thanks!!

[Q] Maximum power input for the Micro USB port?

As the title states,
Does anyone know what the maximum amount of power is that you can have flowing through the Micro USB Charger port?