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Answer:
I have both a Big Sur and a Mojave boot volume on the internal drive of my iMac. Using the RF “unifying receiver” I get the same performance and functions from this keyboard using the Logitech Options software under both MacOS versions with one exception: The two function keys which control screen brightness up/down do… see more I have both a Big Sur and a Mojave boot volume on the internal drive of my iMac. Using the RF “unifying receiver” I get the same performance and functions from this keyboard using the Logitech Options software under both MacOS versions with one exception: The two function keys which control screen brightness up/down do not work under Mojave (they can be recognized as regular function keys, but not as those shortcut keys).

It also works perfectly fine under both versions of MacOS using Bluetooth. I use the RF “unifying receiver” because I have an available USB port for it and it allows me to reliably send key commands at startup whereas the keyboard usually can’t connect via Bluetooth fast enough for the key commands to be recognized when connected that way. Since I frequently switch between Big Sur and Mojave, and the only way to go from a Mojave boot to a Big Sur boot is using the startup key command (because Mojave can’t recognize a Big Sur startup volume), I prefer to use the RF “unifying” receiver. see less
I have both a Big Sur and a Mojave boot volume on the internal drive of my iMac. Using the RF “unifying receiver” I get the same performance and functions from this keyboard using the Logitech Options software under both MacOS versions with one exception: The two function keys which control screen brightness up/down do not work under Mojave (they can be recognized as regular function keys, but not as those shortcut keys).

It also works perfectly fine under both versions of MacOS using Bluetooth. I use the RF “unifying receiver” because I have an available USB port for it and it allows me to reliably send key commands at startup whereas the keyboard usually can’t connect via Bluetooth fast enough for the key commands to be recognized when connected that way. Since I frequently switch between Big Sur and Mojave, and the only way to go from a Mojave boot to a Big Sur boot is using the startup key command (because Mojave can’t recognize a Big Sur startup volume), I prefer to use the RF “unifying” receiver.

John M. Hammer
· May 4, 2021
  • 1
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Answer:
Dear customer, Please find the dimensions of the MX Keys for Mac:

Height: 0.81 in (20.5 mm) … see more
Dear customer, Please find the dimensions of the MX Keys for Mac:

Height: 0.81 in (20.5 mm)
Width: 16.94 in (430.2 mm)
Depth: 5.18 in (131.63 mm) see less
Dear customer, Please find the dimensions of the MX Keys for Mac:

Height: 0.81 in (20.5 mm)
Width: 16.94 in (430.2 mm)
Depth: 5.18 in (131.63 mm)

Logitech Support
Manufacturer · September 24, 2020
  • 1
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Answer:
Yes, the provided usb dongle is a 2.4ghz wireless unified receiver. It communicates with both mouse and keyboard simultaneously. The devices are also bluetooth
aaron atchley
· July 23, 2021
  • 0
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Answer:
Dear customer, the MX Keys for Mac will work with the Mac OS Big Sur 11.0.
Logitech Support
Manufacturer · December 10, 2020
  • 0
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Answer:
I had the same thing happen to me. Essentially, the F4 key would freeze up over and over, and then it would lock me out from the media keys which had changed to F-Keys only and could not be reversed. This would happen intermittently for no reason at any given time. Spent 50 minutes online via chat with logitech and the… see more I had the same thing happen to me. Essentially, the F4 key would freeze up over and over, and then it would lock me out from the media keys which had changed to F-Keys only and could not be reversed. This would happen intermittently for no reason at any given time. Spent 50 minutes online via chat with logitech and they ultimately determined my MX was defective. Am sending back to Amazon for another. Hopefully it will work without issues because this is a very nice keyboard. The feel of the keys is exceptional. A true competitor to the current Apple Magic Keyboard. We shall see. see less I had the same thing happen to me. Essentially, the F4 key would freeze up over and over, and then it would lock me out from the media keys which had changed to F-Keys only and could not be reversed. This would happen intermittently for no reason at any given time. Spent 50 minutes online via chat with logitech and they ultimately determined my MX was defective. Am sending back to Amazon for another. Hopefully it will work without issues because this is a very nice keyboard. The feel of the keys is exceptional. A true competitor to the current Apple Magic Keyboard. We shall see.
Pat Hunter
· June 5, 2021
  • 0
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Answer:
Hi customer,

Yes, Logitech MX Keys Advanced Illuminated Wireless Keyboard will work together with the Logitech M720 mouse.

Logitech Support
Manufacturer · November 16, 2021
  • 0
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Answer:
Hi there,

The system requirements of MX Keys: … see more
Hi there,

The system requirements of MX Keys:
For Unifying USB Receiver:
Windows 10 or later
macOS 10.15 or later
Chrome OS�
Linux

For Bluetooth:
Windows 10 or later
macOS 10.15 or later
iOS 13.4 or later
iPadOS 14 or later
Linux
Chrome OS
Android 5.0 or later

You can customize the device settings with the help of Logitech Options which are limited. Please refer to the link below to customize the device using software:
https://support.logi.com/hc/articles/360023362353 see less
Hi there,

The system requirements of MX Keys:
For Unifying USB Receiver:
Windows 10 or later
macOS 10.15 or later
Chrome OS�
Linux

For Bluetooth:
Windows 10 or later
macOS 10.15 or later
iOS 13.4 or later
iPadOS 14 or later
Linux
Chrome OS
Android 5.0 or later

You can customize the device settings with the help of Logitech Options which are limited. Please refer to the link below to customize the device using software:
https://support.logi.com/hc/articles/360023362353

Logitech Support
Manufacturer · December 17, 2021
  • 0
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Answer:
"Dear Customer, we suggest you to reconnect the keyboard and pair.

Also, use the below link to downolad the latest version of Logitech Options software to customize your mouse: … see more
"Dear Customer, we suggest you to reconnect the keyboard and pair.

Also, use the below link to downolad the latest version of Logitech Options software to customize your mouse:
https://download01.logi.com/web/ftp/pub/techsupport/options/Options_8.36.76.zip" see less
"Dear Customer, we suggest you to reconnect the keyboard and pair.

Also, use the below link to downolad the latest version of Logitech Options software to customize your mouse:
https://download01.logi.com/web/ftp/pub/techsupport/options/Options_8.36.76.zip"

Logitech Support
Manufacturer · May 12, 2021
  • 0
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    votes
Answer:
Yes it will work with a windows PC
Allen A Laux
· February 22, 2021
  • 0
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    votes
Answer:
Hi Juliana,

Yes, Logitech MX Keys Advanced Illuminated Wireless Keyboard comes with a caps lock and battery indicator lights.

Logitech Support
Manufacturer · January 12, 2022