USB - C dongles kills WIFI connection

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13 points

USB - C dongles kills WIFI connection

I bought a dongle for my MBPro since it has no ports for USB, HDMI, Card reader and other essentials. I noticed that after I insert the dongle, I got disconnected from the internet. I tried reconnecting to my WIFI but it always fail. I thought my router had an issue, but upon checking my phone, my wifi was perfectly working. Then I remove the dongle and surprisingly, my WIFI connection on MBPro went back.

So I tried to insert and remove the dongle many times and found out the WIFI killer was the dongle.

It seems that I'm not the only one experiencing this.

I tried all the possible remedies, and the one works for me is to NOT FULLY INSERT THE DONGLE INSIDE THE PORT, JUST ESTABLISH THE CONNECTION. I'm not really sure what really caused this problem with MBPro and External devices though.

Macbook Pro 2018

Hope this helps

Posted on Jan 26, 2019 4:57 AM

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Answer 1

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Crishe12 Author

Level 1

13 points

Jan 26, 2019 6:44 AM in response to Crishe12

TRY TO WRAP YOUR DEVICE'S CABLE WITH ALUMINUM FOIL, MBPRO WILL NEVER GET DISCONNECTED AGAIN :)

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Answer 2

Jan 26, 2019 8:09 AM in response to Crishe12

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

also, any of these items may be involved:

• 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/

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USB - C dongles kills WIFI connection

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