A:Answer You can connect as many wireless devices as you want to with this printer, as long as all of the devices are on the exact same wifi network and have been setup.
As far as the wifi network, if you have dual band where you have a 5g option you will want to have the printer and everyone else on the regular 2gb wifi band.
For computers you will need to download the print drivers for this machine to your computers in order to print wirelessly. Just Google "Print drivers for Epson ET (insert printer model #)."
For mobile devices download the Epson app, unless you have an iPhone or iPad then you can just Airprint