To troubleshoot, I tested the device on an old MBP 17' with USB 2.0, and it seems to be working fine, but that computer also has built-in Ethernet.
Macbook Pro USB Ethernet Adapter Problem Hi, I just managed to install this adapter on my macbook pro, following these steps, everything works great, but the problem arises when I try to shutdown or even restart my mac, it closes out but does not complete either process and hangs until I have to force shutdown holding down the power button for several seconds.