15" Macbook pro 2016 USB-C adapter wifi issue

Why do I have difficulty with Wi-Fi or Bluetooth devices when USB 3 devices are attached to my computer?

Some USB 3 devices 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. Here are some tips to avoid this issue:

• If your USB device has a cable long enough that you can move the device, place it away from your Mac—and make sure not to place it behind your Mac, or near the hinge of its display. The antennas for Wi-Fi and Bluetooth are located there, and USB 3 devices placed there might interfere with your wireless connections.
• If you're using adapters or dongles on a Mac computer with Thunderbolt 3 (USB-C) ports, plug them into the front port on the left side of your Mac, or into the ports on the right side (if your computer has them). These ports are the farthest away from the antennas, making interference less likely.
• To avoid interference on the 2.4GHz band using Wi-Fi, try using the 5GHz band instead. You can change this on your wireless base station. Bluetooth always uses 2.4GHz, so this alternative isn't available for Bluetooth.

from:

Using USB devices with your Mac - Apple Support

• Power Adapter cable recall

Apple USB-C Charge Cable Replacement Program - Apple Support

• firmware update for the Apple Multi-Port display adapters (specifically to reduce interference).

About the USB-C Multiport Adapter Update 1.0 - Apple Support

• LG-display recall -- to address Wi-Fi interference so severe, it knocks the Router off the air if too near the Router.

https://9to5mac.com/2017/02/03/lg-fixes-wifi-interference-problems-with-ultrafin e-usb-c-5k-display-new-units-unaffected/

Following some comments, I got my wifi to work plugging the two data peripherals into the right-side USB-C connectors, and the the power on the left.

Too bad I can't chain the power through the dongle now, though. I can live with it, but this will be the last Apple computer for me. Eat ****, Apple, or return to making good products.

YES!
If you got a hub like me (Satechi) it has 2 USB-C ports. If I connect the power adapter to the one closer to the actual port in my Macbook Pro 13" 2017, I have the wifi issue. If I connect it to the bottom one - no issue at all!

Hello, it's a little old topic but decided to answer anyway

The same topic in this discussion: http://www.mac-forums.com/apple-notebooks/342030-2017-mbp-usb-wifi-issues-solved .html

I wrapped my USB adapter to ALUMINIUM FOLIO and immediately wifi is working. Oh my god, could you please Apple build your bloody expensive computers better, so that we wouldn't have to use FOLIO. I hope this would help someone else too.

I've read discussions about how usb-c accessories affecting wifi by interfere the signals due to the MBP's wifi adapter position near the usb-c ports (on the left side). So i tried to cover several parts of the dongle with my hand hoping it will reduce the interference. I did this over and over until i get improvement on the wifi speed with speedtest app. Every time i cover the dongle on the jack with my hand, the speedtest showed improvement. So i got into conclusion that i need to cover the jack part to reduce the wifi interference. I have this rubberband in my drawer, so i tried to wrap the jack with it.. and voila.. it worked.

this is how i wrapped the usb-c jack..

and this is how the speedtest result with the usb-c dongle on (my current internet plan max speed around 10Mbps)

Yeah, this is the exact reason behind the problem. The wi-fi comes back even if you only put your hands on ports as a shelter. There is also a paper about this problem written by Intel. Here: https://www.intel.com/content/www/us/en/io/universal-serial-bus/usb3-frequency-i nterference-paper.html

In my case, it is actually the fact of having the Power Cable connected to the Adapter. You can keep the adapter on the "wifi" side, as long as you connect the power on the other side.

Apparently i have tried and solved this interference problem with a simple hack. I'm using USB-C to HDMI dongle with MacBook Pro 2016 13" without touchbar, so there's only 2 usb-c ports on the left side.

I wrapped a rubber band (the thick-wide one, the one that looks like a wristband) around the USB-C jack handle. It seems to be working and my wifi speed seems normal (i've done speed test also). I found this simple hack is hard to believe. Tell me if this worked for you too.

Cheers

Yeah, this is the exact reason behind the problem. The wi-fi comes back even if you only put your hands on ports as a shelter. There is also a paper about this problem written by Intel. Here: https://www.intel.com/content/www/us/en/io/universal-serial-bus/usb3-frequency-i nterference-paper.html

If your adapter isn't a direct adapter, i mean it has a cable between the USB-A and the USB-C connector, this method could work: How to FIX USB-C/Wi Fi problems - 2016 MacBook Pro - YouTube Just try out. Good luck!

I spent all day for surfing forums to solve this problem. I have brand new MBP 2017 with High Sierra and wifi doesnt work with attached HHD through USB-C to USB-A adapter.

It is very strange, but when I holding mac on my knees - everything works, while when it stands on table - don't.

In the end, I took foil from the kitchen and wrap adaptor - AND IT'S WORKS! I tried without - don't.

Thank You!

There must be a way to fix that on the adapter. Maybe shielded tape will do it.

The only problem is that now the dongle is on the side of the mouse, and cables are now in the way.

👏-1F3FC;👏-1F3FC;👏-1F3FC;👏-1F3FC;👏-1F3FC;👏-1F3FC;👏-1F3FC;👏-1F3FC;👏-1F3FC;👏-1F3FC;👏-1F3FC;👏-1F3FC;👏-1F3FC;👏-1F3FC;

Hi all,

It seems I have the same issue, but just wanna be sure before spending money.

* I just receive a Samsung Led HDMI (SD330)

* I bought this adaptator => USB 3.1 Type-C Adaptateur HDMI 4K, BACAKSY USB-C numérique AV adaptateur multiport pour Apple Macbook Chromebook Pixel D….

* I have a MacBook Pro (13-inch, 2016, Two Thunderbolt 3 ports).

When I plug-> no wifi or come and back, not stable. When I unplug the adaptator. everything is fine.

And seems as I read, I have to change the hdmi adaptator (the USB 3.1 type-C....) ?? is that correct (20 euros trash... sniff).

Do you have an advice of a good one ?

thanks

Confirmed issue... such a bummer... some wifi do work due to the frequency, change your wifi router to 5ghz should solve the wifi dongle issue, problem is not all wifi's are 5ghz mostly are still 2.4ghz which interferes with the signal. guess the only way is to find the right dongle as some dongles does have proper shield to avoid interference or connect it on the right side usb c ports, far away from the wifi chip on the left side ports (bad luck to those with 2 usb c ports as those are only on the left side of you macbook pro)

apple is getting bad lately, it is my first time to regret purchasing an apple product 😟 should have stayed with my 2013 macbook pro 😟 or bought the 12 inch macbook 😟

How did you decide to try that hack? If you saw it somewhere, can you post a link to a further discussion of any issues?

what do you think it might be doing to fix the problem?