Pre-purchase questions on the Asus AC3200 or the AC88U

Hi,

I have some questions about the Asus AC3200 or the AC88U

my actual schema is: modem / router (usr robotics 9108) --> layer 2 switch --> internal lan

1- is possibile to set vlan so I can share the Ethernet printer and internet with the layer 2 switch?

2- if I assign to the 2,4 Ghz band the guest access I can still use it for private (not guest / normal) wi-fi access?

3- led can be turned off

4- the RT AC88U has a fan inside if yes is loud?

5- tri-band is for who have many device...

Pre-purchase questions on the Asus AC3200 or the AC88U