m1 Mac mini mouse and keyboard lagging even frozen when using usb-a receiver and the another usb-a port on Mac mini is used

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m1 Mac mini mouse and keyboard lagging even frozen when using usb-a receiver and the another usb-a port on Mac mini is used

The mouse and keyboard I use is Logitech m546 and k780, both connect with same Logitech unifying receiver, it work correctly when only one usb-a used by the receiver, I can use it fluently with about 1m distance between mouse and Mac mini.

but when I connect a external hard disk or video capture card to the another usb-a port on the Mac mini ,the mouse become severe lagging or even frozen most of the time when the mouse is 1m away from the Mac mini, used fluently when mouse is close to Mac mini.

Keyboard also become lagging but better then mouse, but some of the shortcut key malfunction even after the another usb-a is disconnected, I have turn off and on the keyboard to put it back.

all my device is connected directly to the usb-a port, and the thunderbolt port is no used and haven't test for this problem.

os version:12.0.1 (21A559)

Mac mini, macOS 12.0

Posted on Dec 13, 2021 10:19 PM

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Answer 1

Top-ranking reply

hcsitas

Level 6

13,964 points

Dec 14, 2021 12:27 AM in response to yeeyc98

Connect either the receiver or the external disk to the M1’s Thunderbolt port using a C-A adapter like this one https://www.apple.com/shop/product/MJ1M2AM/A/usb-c-to-usb-adapter

Should improve/fix.

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Answer 2

den.thed

Level 10

90,832 points

Dec 14, 2021 6:56 AM in response to yeeyc98

High speed USB cables can cause both Wi-Fi and Bluetooth issues.

see > https://support.apple.com/en-us/HT201542

I would try putting the Logitech receiver on a short USB extension cable to move it away from the drive and it's cable to see if that helps.

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Answer 3

Dec 14, 2021 4:41 AM in response to yeeyc98

The other option is to get a high quality, well shielded USB cable to connect to the external drive.

Many dongle based keyboard and mouse systems that are not Bluetooth use a very simple transmission protocol between the dongles and devices which can be sensitive to interference especially since newer devices have been using the 2.4 GHz unlicensed bands as opposed to older devices that used the 900 MHz unlicensed bands.

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Answer 4

yeeyc98 Author

Level 1

5 points

Dec 14, 2021 4:55 AM in response to woodmeister50

the receiver and external hard disk work perfectly on my old 15years MacBook Air which poorly only have two usb-a port , therefore I think it not caused by them.

I realise when I plugin a pen drive to Mac mini the problem didn't occur, hence I guess it is due to the port's power supply insufficient, and both port share same power supply

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Answer 5

yeeyc98 Author

Level 1

5 points

Dec 14, 2021 4:47 AM in response to hcsitas

my adapter is on the way, but I am considering could i solve it without adapter?

I guess the reason of this problem is both usb-c port use same power supply, hence when I connect a device with high power drived may cause the receiver can't get enough power to work correctly, the evidence is when I plugin a usb-a pen drive to the Mac mini the problem didn't appear.

if my guess is correct I think Apple should notice it on the item details.😟

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m1 Mac mini mouse and keyboard lagging even frozen when using usb-a receiver and the another usb-a port on Mac mini is used

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