Level 1

96 points

USB Ethernet Adaptor

I purchased an Apple USB Ethernet Adaptor MB442Z/A to use with my MacBook Air 11". On the right hand USB it worked a couple of times. On the left-hand USB it won't work at all. Now it works on neither. I've checked and it is visible in System Profiler, however in the Network settings it says Cable Unplugged. The left hand USB works fine with 3 other devices I've tested. Any ideas?

Message was edited by: Madam

MacBook Pro 15-inch Aluminum (Mid 2010), MacBook Air 11" (late 2010), Mac OS X (10.6.4), iPhone 3GS iOs 4.01

Posted on Oct 23, 2010 10:59 PM

34 replies

SurfBoy

Level 1

1 points

Dec 7, 2010 10:18 PM in response to Clicktree

Yeah, that's a weird fix and makes no sense, but for whatever reason it works.

Anyone filed a bug with Apple yet?

hawleyrw

Level 3

633 points

Dec 10, 2010 1:57 PM in response to Madam

All this talk made me try mine today. I bought at a local store after getting my new MBA, but had never tried it.

Both sides worked just fine. In fact, writing this using the connection..

Jun 10, 2011 3:45 AM in response to Madam

Hi!

I have same trouble with MBA 11. I try any variants and find resolve of my trouble.

Step-by-step:

I power on/wek up my laptop. Connection in "System Preference-Network" is "Not Connected" (yellow). "About this mac-Hardware-USB" - Apple USB Ethernet Adapter is not present or present but "Current Required (mA)" is "N/A".

I disconnect USB Ethernet Adapter.

I connect USB Flash Drive.

I reject and disconnect USB Flash Drive.

I connect USB Erhernet Adapter. "About this mac-Hardware-USB" - Apple USB Ethernet Adapter is present andpresent but "Current Required (mA)" is "250". Connection in "System Preference-Network" is "Connected" (green).

It's fantastic, but it's work.

I try connect USB Flash Drive to another USB port without disconnect Apple USB Ethernet Adapter - no result. Connection "Not Connected".

I dont' understand why my Ethernet Adapter prefer "rigth" USB port 🙂

And I have idea about this troubles during charging. Connect Ethernet Adapter more difficulty during charging laptop.

ben919

Level 1

0 points

Jun 10, 2011 9:32 AM in response to juliap2151

Similar issue here.

GOM

Level 1

0 points

Sep 7, 2011 9:21 AM in response to Madam

I had same issue (usb ethernet just stopped working) and happy to report creating a new location in network prefs sorted the problem. Happy days.

mimetz

Level 1

14 points

Sep 15, 2011 8:00 AM in response to Madam

I tried all the above with the USB/E'net device, nothing worked on my MBA, took it to a Genius, he re-installed Lion OS from recovery and all was well ;-0)

G40

Level 1

0 points

Dec 20, 2011 4:38 AM in response to anpwq

Thanks - your suggestion worked perfectly on Snow Leopard.

markmal

Level 2

198 points

Jan 14, 2012 12:55 PM in response to anpwq

this does not work for me.

Feb 11, 2012 2:16 AM in response to Madam

Had same problem and found this thread very helpful. To add to it, I was able to use the "Automatic" location by opening its dialog, clicking the + button under the list of interfaces, and selecting USB Internet. Not sure if this would have worked if I hadn't first created a new location - it was when I did this that the device appeared to be recognized.

Otto Jr

Level 1

0 points

Mar 27, 2012 4:42 PM in response to heickxopelk

I've tried all the unplugging tricks, and adding/deleting the device itself... I only come up with the result that the adapter works out of the right side only. Infuriating.

ODP01

Level 1

0 points

Apr 2, 2012 8:58 AM in response to Otto Jr

I'm using a non-apple USB adapter that uses the AXIS driver, fiddled around for ages and finally got this to work. Works on both USB ports of my MBA 11" MAC OS X 10.7.3

The fix for me is in the

Network / Advanced / 802.1X tab, I unticked the "Enable automatic connection" box and bingo !

Apr 22, 2012 5:48 PM in response to ODP01

MacBookAir3,1

2010 1.6GHz Core 2 Duo

OS 10.6.8

ODP01's answer didn't work for me -- not quite -- I had to innovate on it.

Steps I took and I'm not sure which did the trick:

- Network Settings

- Establish a new location

- USB Ethernet was not recognized

- Created a new USB ethernet connection using the plus in the bottom left

- With it selected, clicked on button Advanced ...

- Ethernet Tab

- Configure: changed from Automatically to Manually

- Speed: 10baseT/UTP

- Duplex: half-duplex

- MTU: Standard

I do not know what these settings do. But suddenly my USB is recognized and works. It hasn't worked previously for months now.

janet823

Level 1

0 points

Apr 30, 2012 5:31 PM in response to davidcochran

When I click on "advanced", I don't have an "Ethernet" tab and so I can't follow these instructions, and none of the other fixes worked either, on right or left USB ports.

Drew W

Level 1

4 points

Nov 4, 2012 9:47 AM in response to Madam

For what it's worth, I work at one of the tech 4 (not apple obviously). Lots of us have Macbook Airs and we all have this problem. IT is so aware of it that they issue us Cisco USB adapters and just throw the Apple ones away.

http://www.amazon.com/Cisco-USB300M-Cisco-Linksys-Ethernet-Adapter/dp/B001NLV4TQ

Nov 4, 2012 5:48 PM in response to janet823

You can get the latest AX88772A Mac OSX driver from ASIX web site (http://www.asix.com.tw/download.php?sub=driverdetail&PItemID=97) and refer to the driver installation guide in the driver package to install the latest driver. It should work fine on MBA.

If you still have problems, please provide us more detailed error behaviors for further investigation.

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USB Ethernet Adaptor