apple usb ethernet adaptor A1277 suddenly not working with macbook air

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Level 1

9 points

apple usb ethernet adaptor A1277 suddenly not working with macbook air

Apple USB to ethernet adaptor model A1277 was working fine with my mid 2011 macbook air until I installed EL Capitan. Network utility recognizes it (it picks up the mac address when I plug it in a USB port) but it does not connect any more (no packets are sent or received and no IP address is loaded when using DHCP or with a manually assigned IP address). The network cable is OK, the router is also working, the LAN outlet on the router is also working with other Pc's but not with my Macbook Air. Have rebooted the rooter and Macbook but it has not helped.

The adaptor is not used often and I do not think it has failed suddenly. I would expect it to fail while I was using it.

Any suggestions on how to get it working again?

Adaptor details:

Product ID: 0x1402

Vendor ID: ox05ac (Apple Inc.)

Version: 0.01

Serial no: 119E31

Speed: up to 480 mb/sec

Manufacturer: Apple Inc.

Product ID: 0x1402

Vendor ID: 0x05ac (Apple Inc.)

Product ID: 0x1402

Vendor ID: 0x05ac (Apple Inc.)

Version: 0.01

Serial Number: 119E31

Speed: Up to 480 Mb/sec

Manufacturer: Apple Inc.

Location ID: 0xfa130000 / 4

Current Available (mA): 1000

Current Required (mA): 250

Extra Operating Current (mA): 0

Version: 0.01

Serial Number: 119E31

Speed: Up to 480 Mb/sec

Manufacturer: Apple Inc.

Location ID: 0xfa130000 / 4

Current Available (mA): 1000

Current Required (mA): 250

Extra Operating Current (mA): 0

MacBook Air (11-inch Mid 2011), Other OS, iOS 10.11.6

Posted on Aug 27, 2016 7:54 AM

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Answer 1

dgk1024 Author

Level 1

9 points

Aug 28, 2016 12:11 AM in response to dgk1024

Hi, I did try both usb ports but both did not work. I also installed ASIX drivers: AX88772A, AX88772B and the latest driver AX88772C. In each case the installation was successful and I was prompted to re-start which I did and plugged in the adapter at both ports but had no response. I also installed the drivers twice as was suggested, in one of the discussions, but that also did not work. I followed the PDF file instructions to check under "Hardware" "USB" "Hub" but there was no entry for Asix. Checking "Software" "Extensions" also was totally blank. So I got a message that the installation of the drivers was successful but no drivers were visible after installation! I also tried to un-install the drivers but got the usual message "AX88772C_772B_772A_760_772_Uninstall_v130” can’t be opened because the identity of the developer cannot be confirmed."

Esther anything else I could possibly try?

Regards.

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Answer 2

sberman

Level 10

272,754 points

Aug 27, 2016 1:48 PM in response to dgk1024

I'm surprised you did not mention ...

Did you try your computer's other USB port? Same result?

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