I've bought a USB ethernet adapter (A1277) and tried to make it work on my MacBook Air MD231 (mid 2012) and may OS is OS X Mavericks, but It's not working. I tried adding USB ethernet connection in network preferences, tried resetting PRAM and SMC, and also tried installing drivers given, but none of them worked. Rebooting didn't help, and I don't have Android file transfer installed (I've uninstalled it couple of days ago), which I saw people saying that uninstalling that helps fix the problem.What should I do?thanks. For reasons best known to itself, Apple chose not to include updated drivers for the A1277 adapter when it released Mavericks.

ASIX AX88772 USB2.0 to Fast Ethernet Adapter Free Kensington Technology Group Windows NT/2000/XP/2003/2003 AMD 64-bit/XP AMD 64-bit Version 2007-01-20 Full Specs Average User Rating. Download AX88772 Driver for Mac - Driver for the AX88772 USB2.0 to 10/100M Fast Ethernet Controller with Embedded PHY. Just translate 3.5.1 free download for mac.

In the screenshot you provided, the 'Product ID: 0x1402' in reference to your adapter reveals it was manufactured by ASIX Electronics, and further indicates that ASIX designates it internally as a model AX88772C. (This information comes from the massive OUI database of model and vendor codes maintained by the IEEE.)Happily enough, even though Apple no longer continues to support the product, ASIX does. Their current driver version (2.2.0) for the A1277 / AX88772C includes support not only for Mavericks, but for Yosemite as well.You will find the link to download 'Apple Mac OS X 10.5 to 10.10 Drivers Installer' as the first entry in the list of driver downloads on this page of the ASIX site. I had a similar problem, I would see the Device in the Network Settings but it would be unable to put a link up (switch lets off) or get an IP.I tried using DHCP with manual address which fixed the issue. The interface went up and it picked up the gateway and DNS correctly over DHCP.So I suspect my DHCP server is behaving funny and the Apple USB Adapter is doing the same since I had to spend two hours tried to figure what's wrong, I almost did a restore of my laptop which would have been a pain with getting everything back up.