Experience with K540 ... and the Logi Options + software.
Keyboard : No num lock or scroll lock lights.
Key strokes are not naturel, mistyping regularly. Feeling of cheap keyboard. Useless glossy creating reflecting issues.
What a major disapointment. I return the product.
Logi Options+ Software:
Ads while installing the software : I don't care about your product line. Just install the damned software without nudging the screen with pictures of products. The only result you get is angriness against Logi !
No settings to prevent the software to start. I don't need or want your software to run as soon as I start my computer and all the time. I need this software to only program the fn key. What a disappointment to realise that Fn key from F9 to F12 cannot be configured + Calc Fn key cannot be reconfigured. There are 0 logic around theses restrictions. Silly.
I uninstall this **** software.