I just setup a Mac Mini Server for file sharing/other services. I have noticed an issue I am hoping someone can help explain. Setup Details Mac Mini Connected to Ethernet Macbook Air Connected to Ethernet via USB to Ethernet Adapter Apple Airport Extreme with Cisco Gigabit Switch for Networking House wired with Cat6 When I have the above setup, copying files over the network is extremely slow...looks to be about 5 MB/S. I understand the USB to Ethernet Adapter is only 10/100, but I would expect much higher than 5 MB/s. When I switch to the Thunderbolt to Ethernet adapter on my Macbook Air, it is much faster. I don't have exact numbers, but it looked closer to 100 MB/s, which is acceptable for what I need. Questions: 1. Can anybody explain if the speeds with the USB adapter make sense and if this is normal/expected behavior? 2. If not expected, - Is there any setting I need to change on my Mac/Airport/Switch?OR - Can anybody with a similar setup (two Macs connected via Ethernet over a network) compare performance of the USB vs Thunderbolt adapter? I am wondering if the USB adapter I have is defective. I am really hoping I can find a way to use the USB adapter. I don't like using the Thunderbolt adapter because then I cannot hookup an external monitor to my MBA. Any help would be greatly appreciated!