GL-AR300M add USB Wifi A dongle?

Does the GL-AR300M-EXT come with any drivers to support a second wifi radio on USB ?

I would like to add an 802.11AC usb dongle so I can have dual bands

Like a Archer T1U | AC450 Wireless Nano USB Adapter | TP-Link

Never tried, but I think it can work, you can try to install kmod-mt76 and kmod-mt7601u.

I was able to load the driver but it still did not see the usb device. I was able to use a 802.11N dongle and make that work so I think that is what I will go with for now.