How can I use my mouse and keyboard on MacOS Mojave?

If I remember correctly you can use one universal receiver for more than one Logitech device. You would have to check the Logitech site on how to do that. That way, you only would have one port for the keyboard and mouse, and the other for your hub.

FWIW, I don't know if plugging the receiver into a hub works. Try plugging it directly into the computer.

I'm sure in my case there's no issue with the hardware. I have an Apple keyboard and mouse plugged into a MacBook Air, both are recognized at startup so that I can log in using them. After that though they stop working and no matter what I do they won't work again until I restart.

What I can say is I have a K750 keyboard connected to a 2015 iMac running Mojave. The Universal Receiver is plugged directly into the iMac, no hub.

Beanbuddy wrote:

No actually mine is wireless and solar as well...

So what did this mean?

Yeah no problems plugging it in to my MacBook but I used to be able to be able to just connect one cord to my mac at my desk

I don't believe Mojave stopped supporting any device. There may be devices that are no longer compatible. As I mentioned, I think you need to speak with Logitech. https://support.logitech.com/en_us/product/g602-wireless-gaming-mouse/contact-us

Maybe there are two different Logitech K750 keyboards. Mine is solar and has no cord to use with it.

No problem. So do you have the Logitech receiver plugged into your Mac or the hub? Also, did you go into System Preferences > Keyboard and configure the keyboard again?

Same problem. Have you solved it?