The backlight can be placed in an energy-saving mode which turns it down or off when the ambient light in the room is bright enough for the backlight not to be needed. The backlight is a white LED and it’s great if you’re working in low light levels or if your hands are casting a shadow over the keys. There’s a proximity sensor built into the keyboard that illuminates the keys as soon as a hand goes near them. Perhaps the biggest attraction of the Logitech MX Keys for most users will be its backlight. With the backlight on the Logitech MX Keys turned off, the built-in battery can last for up to five. The pitch of the keyboard is a little wider than the smaller Apple Magic keyboard but it didn’t take too long for me to get used to the larger width keyboard. There’s plenty of travel in the keys and each key is dished to fit the tips of the typist’s fingers better. The quality of the key switches on the MX Keys is superbly fluid. It’s an incredibly useful and flexible piece of software that turns the MX Keys into a really productive keyboard. For example, you could set up the Easy-Switch 1 key to work with a Mac, using the Logitech Unifying Receiver, while the Easy-Switch 2 key could be made to work with a PC via Bluetooth with a PC layout. The keyboard also has three Easy-Switch keys for switching between other devices. The Logi Options software also has other settings for the keyboard layout or whether the backlight is on or off.

For instance, if you want to change a word from upper case to lower case in Microsoft word with one keystroke, you can assign that keystroke function to one of the keys.

As well as offering the same macOS system keys as Apple’s Magic Keyboard, the keys can also be customized for individual software applications.

MX Keys uses a small piece of software called Logi Options that can reassign special keystrokes to the function keys on the top row of the keyboard. Each key of the Logitech MX Keys has a sculpted and dished keytop that fits the tip of the fingers.

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