Macbook pro 13" (2020) USB c to USB hub get randomly disconnect

Hi red225,

Thanks for coming to Apple Support Communities for help today with a USB hub that is disconnecting. It sounds like this is an older third-party USB hub and you're using a USB-C adapter.

Since it works with an older MacBook Pro, it just may not be compatible with the new one and an adapter. You can verify this by testing the hub inside a new user account: How to test an issue in another user account on your Mac. If it disconnects there, the only solution may be to purchase an updated USB-C hub. But you can also check with the manufacturer to see if they have any suggestions.

Have a great weekend!

I had the same issue with a Satechi hub. No word from Apple on this, but using a hub with a terminating proxy fixed the issue. I bought a Caldigit T3 dock and I've yet to have a dropout. The dock is expensive, though.

I actually find a temporary fix: use a cheap usb c to usb adaptor instead of a hub for my keyboard.

It’s now working well for a week. The only problem is one TB port is “wasted”.

I kindly ask you to open a support case at Apple Support. I did it for all our 5 MacBook Pro 16" showing them that all our SSD hubs have these USB bus errors.

I can still say there is something strange going on in software. My SSDs habe an integrated HUB with a 3.1 Gen 2 VIA VL-822 Chip.

1. The SSD devices work with same MacOS on 15" 2019 model.
2. The SSD devices work with Windows 10 on same machine.
3. The SSD devices work if I connect an older VIA VL-817 USB 3.1 Gen1 Hub in between MacBook and the SSD device.

They need data reports and information that they will query in a remote session. Tell them you insist on a data analysis of this bug so they don't block you in frontline. I insisted on a escalation as soon as I explained the things I found out. But I had to explain 2 times.

Hi

I have the same spec 2020 Macbook Pro and am also facing this issue. It occurs with all usb c devices not just the hub. It has occurred on the satechi hub, android tablets, logitech mouse and das keyboard.

This seems to be an issue with the USB drivers.

Thank you

I have the same problem. OP: it's not you. All Macbook 2020 laptops have this bug. See this article for more info:

https://www.macrumors.com/2020/06/17/macbook-pro-usb-2-0-accessory-issues/

Also note that these "Roundup" articles have added a warning in the "Issues" section about 2020 Macbook USB problems:

https://www.macrumors.com/roundup/macbook-pro/

https://www.macrumors.com/roundup/macbook-air/

I see the same issue on my MacBook Pro 13 2020 and I am pretty sure it does only happen when using a hub. Seems pretty stable when connecting mouse and keyboard directly via individual usb c adapters

No, that is wrong. We have app. 20 MacBook Pros 2020 different models. Only some of them haven't go this issue anymore since 10.15.6. But all our 16" still have the issue.

The USB Hubs all work fine with 2019 models! Only 2020 models still suffer from it.

seems to be resolved with macos 10.15.6

Hi,

I have the same problem with a Logitech Mouse and an Apple Keyboard:

https://discussions.apple.com/thread/251445947

There also seem to be similar issues:

https://discussions.apple.com/thread/251425231

What USB hub do you use?

I've the exact same issue with my new Macbook Pro (13"; 2020; i5; 16Gb RAM; etc.). I've had it less than a week now and have had multiple dropouts from a brand new Satechi hub (only my USB 2.0 keyboard) and from a USB 2.0 DAC plugged directly into the machine (new USB C to USB B cable). I can get the hub to reconnect if I unplug and plug it back in again, but the DAC connection doesn't respond to connector cycling and instead requires a full reboot. This is beginning to look a lot like the new batch of machines have a real compatibility issue with USB 2.0 devices. I hope this is a software fix instead of a chipset snafu.

PLEASE FIX THIS, APPLE.

Hi,

I bought yesterday a MacBook Air 2020 and I am facing the USB dropout issue as well. On a quick research it seems that the problem is very common on the 2020 devices and I Apple is yet to provide a feedback on it. There is a lot of people in the same boat.

https://www.reddit.com/r/mac/comments/gp5b1z/usb_20_issues_on_new_macbook_pro_13_2020/

https://www.reddit.com/r/macbookair/comments/g7xi2r/macbook_air_2020_usb_disconnects/

https://www.macrumors.com/2020/06/17/macbook-pro-usb-2-0-accessory-issues/

https://news.knowledia.com/US/en/articles/users-reporting-usb-20-compatiblity-issues-with-2020-macbook-pro-and-f3a50c3fbc4e9b0bb12729c7cece7761788e3f69

Same problem here. Our company just bought 2 13-inch MacBook Pro 2020 (4 TB3 ports), both have this problem.

When a keyboard (controller by Sonix) are connected through a TB to USB hub, the USB feature of the whole machine freezes. That is, all USB devices, even connected through different USB hubs (through different TB ports of course), stop working at the same time. And unplugging and re-plug some of them does not work, either.

The only solution is to unplug all hubs at the same time, and re-plug.