I have a 5th generation AirPort Extreme connected to a 16-port gigabit switch and nearly everything in my house is connected via ethernet, including my Mac Mini. Attached to the AirPort, I have a 3TB external drive with its own power supply. When I run Blackmagic disk speed test from the Mac Mini, I'm getting a paltry 8.0 MB/s write and 8.4 MB/s read from the the external drive attached to the AirPort. If I run the same test against a different external drive attached to the AirPort, I get similar results. Are these typical results or is something really wrong here? To rule out the network, I ran another test against my Synology NAS. I'm getting 37.5 MB/s write and 83.2 MB/s read.