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Juraj SK Level 1 Level 1

I have macbook pro retina late 2013 2.6/8/512 and i experienced strange issue with wifi and usb 3.

When i plug in usb3 stick (kingston data traveler 32 gb) to left usb3 port, i cannot connect to internet.

When i eject it, the internet is ok. The same situation everytime i repeat this process.

Have you experienced something like that? Thank You.

MacBook Pro with Retina display, OS X Mavericks (10.9)
  • mario49 Community Specialists Community Specialists

    Hello Juraj SK,


    Thanks for using Apple Support Communities.

    For more information on this, take a look at:


    Using USB 3 devices on Mac computers FAQ


    I sometimes have difficulty with Wi-Fi or Bluetooth devices when USB 3 devices are attached to my computer.  What could be wrong?

    Some USB 3 devices, hard drives in particular, can generate radio frequency interference that can cause Wi-Fi and Bluetooth devices operating in the 2.4GHz band to have issues communicating with your computer. Do not place hard drives or other USB devices behind the rear of your Mac near at the hinge of your screen. The antennas for Wi-Fi and Bluetooth are located there, and USB 3 devices placed there may interfere with your wireless connections. See this white paper for more information.



    Best of luck,


  • wired00 Level 1 Level 1

    Thanks this helped my problem 100%. I'm staying with a friend. My USB 3 hub was nearly touching the back of my MBP. After moving to the extent of the USB 3 hub cable and under the table i went from very unreliable 1Mbps to > 15Mbps. that was doing my head in!

  • strandgaard Level 1 Level 1



    I had the exact same problem and the solution helped me.


    Thanks a lot

  • vbre Level 1 Level 1

    Solved my problem too!

  • Antony D'Emanuele Level 2 Level 2

    I am experiencing a similar issue (see Losing Wi-fi and Internet Connectivity with Anker AH240 Hub Connected) however, I am not connecting a drive. Does the hub itself generate interference, it is presently located next to my MBP

  • Longimanus Level 1 Level 1
    Mac OS X

    I have had a similar problem, I purchased a right angle extension USB3 cable, when I plug it in the WIFI just drops, but if I get rid of the extension its fine, does this mean I won't ever be able to use this?

  • florinfromnorthampton Level 1 Level 1

    Hi, I'm having a similar problem with my MINI, which I've just bought. When I plugged the usb 3 hub (HooToo HT-UH010), the wifi dropped and the mouse (logitech) started to become unresponsive. I've unplugged the hub and everything went back to normal. The Apple support technician told me that the hub is pushing electricity into the computer and could damage it, so I should never plug it in again because is defective. So, following the conversation, I've returned the hub to Amazon, waiting for a refund, so I could buy a different one, as it appears that not all the hubs are compatible with Macs. Now, after reading lots of discussions on lots of forums, it seems that I'm not the only one with this issue and it may actually be an Apple fault. The thing is, if I plug any of my USB3 hard drives or USB3 stick, nothing happens, there is no wifi drop, everything is normal, only with the hub plugged in I had this issue.

    I really need to use a hub for my external hard drives and I really don't know what to buy, I don't know if there was a real problem with the hub or is just a problem with all the Macs.

  • Antony D'Emanuele Level 2 Level 2

    I Returned my USB 3 hub due to similar issues and from my research on the Internet decided to avoid a USB 3 hub. Caused several issues and I did not want to waste any more time troubleshooting or cause damage to my MBP.

  • florinfromnorthampton Level 1 Level 1

    Unfortunately, for me that is not an option. I transfer large amounts of data and videos between my hard drives and speed is essential. I really need a good USB 3.0 Hub and I don't know what will work without affecting the WIFI.

  • Antony D'Emanuele Level 2 Level 2

    I contacted the manufacturer of the hub I eventually purchased and they assured me it was compatible... I returned it after a few days. From what I have read it is a generic issue but let us know if you find a suitable product.

  • florinfromnorthampton Level 1 Level 1

    Hi, just received a different USB hub, Anker this time. According to the Apple tech, the HooToo was pushing electricity into my mac. This time, I just plugged in the hub, without the power source. 2 second later, the wifi dropped. Pulled it out, wifi back on. Conclusion: Apple's fault.


    I've changed from windows to mac, hoping that I will have a hassle free life, but after this, I think I will return the mini and with 1500£ buy a decent windows pc.

    I've red about people changing 20 hubs with no joy, I will stop at 2. HooToo and Anker are supposed to be the best. Power source or not, wifi drops like a piece of led. That is clear enough for me, is Apple's fault and they won't do anything about it.

  • Antony D'Emanuele Level 2 Level 2

    I bought Anker after researching but had problems and had to return. Am not sure it is Mac specific, USB 3 cables carry power and apparently carry more power and electric field that can interfere with Wifi. I wish there was a definitive source on information on this, I spent a lot of time researching this and gave up. Apple do provide some advice on USB 3 hubs (Using USB 3 devices on Mac computers FAQ - Apple Support)

  • florinfromnorthampton Level 1 Level 1

    It looks like there is an option, or two, but a lot more expensive than a simple usb hub. Belkin's thunderbolt dock, which gives you 3 usb 3.0 without taking one of the mac so basically you use 4, but this is the most expensive option, 200£ and you are still limited to a certain number of usb's. The second option, which I found today after some research, is Kanex. They do a thunderbolt to usb 3 and sata or gigabit ethernet (2 different adaptors), which costs around 80£. The guy that wrote the review said that he's using a hub plugged into the adaptor, and everything is fine. This gives you the option of using any hub, with as many as 10 usb 3 ports. A decent hub and the adaptor will set you back around 100-120£ which is cheaper than the Belkin dock but, in my case, after spending 1500£ on the mini, I'm not very happy spending another 100 to go around Apple's mistake.

  • higherdestiny Level 1 Level 1

    OK, so I've discovered something interesting!


    I believe it is a design fault relating to the MacBook pro.  Possibly an earthing issue with the unibody chassis.


    If I insert a USB3 hub into the USB port, Wi-Fi fails.

    HOWEVER - if I wiggle plug out of the port just 1mm so that it still connects and operates correctly, but isn't fully inserted into the port, Wi-Fi works again!


    My guess is that the USB3 port is earthing through the unibody chassis and causing interference with the WiFi antennae.


    This doesn't happen on any other laptops in the house - just the Mac.




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